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United States Patents Related to Insulators Listed by City, State & Country in Which the Inventor Lived

Argentina:  Entre Rios
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Works Consulted

ARGENTINA

Entre Rios

 
Concordia Letters Patent 216,138 issued June 3, 1879 to John H. Bloomfield
CANADA

British Columbia

 


Prince Rupert Letters Patent 1,668,581 issued May 8, 1928 to Donald McIntyre Brown
Vancouver Letters Patent 627,366 issued June 20, 1899 to John Treleaven, assigned to Pointer & Turton
ENGLAND
 


Birkenhead Letters Patent 276,839 issued May 1, 1883 to Joseph Slater Lewis of the county of Chester

Letters Patent 298,594 issued May 13, 1884 to Joseph Slater Lewis of the county of Chester, assignor of one-half to William Phillips Thompson of Liverpool, England
Charlton Letters Patent 201,615 issued March 26, 1878 to Walter C. Johnson and Samuel E. Phillips
Liverpool Letters Patent 298,594 issued May 13, 1884 to Joseph Slater Lewis of Birkenhead in the county of Chester, assignor of one-half to William Phillips Thompson of Liverpool, England
FRANCE
 
Paris Letters Patent 28,263 issued May 15, 1860 to Louis Engler and Ernest F. Krauss
UNITED STATES

Alabama

 


Birmingham Letters Patent 724,329 issued March 31, 1903 to Robert H. Polk
Mobile Letters Patent 591,104 issued October 5, 1897 to Willis Roberts
Arizona
 


Yuma Letters Patent 815,471 issued March 20, 1906 to George L. Ricks
California
 


Alameda Letters Patent 1,592,042 issued August 13,1926 to Maurice H. Newman of Alameda, California and William A. Gilardin of Oakland, California
Berkeley Letters Patent 1,602,918 issued October 12, 1926 to Woodward J. Martinez
Oakland Letters Patent 1,592,042 issued August 13,1926 to Maurice H. Newman of Alameda, California and William A. Gilardin of Oakland, California
San Francisco Letters Patent 187,183 issued February 6, 1877 to Paul Seiler , assignor of one-half his right to Joseph Herz

Letters Patent 297,699 issued April 29, 1884 to John M. Klein
Colorado
 


Denver Letters Patent 907,251 issued December 22, 1908 to Harry W. Lawrence
Connecticut
 


Bridgeport Letters Patent 518,214 issued April 17, 1894 to Henry P. Ball

Letters Patent 804,115 issued November 7, 1905 to Gilbert W. Goodridge
East Lyme Letters Patent 138,512 issued May 6, 1873 to Edward A. Merrell
Hartford Letters Patent 71,418 issued November 26, 1867 to W. Edgar Simonds

Letters Patent 92,111 issued June 29, 1869 to W. Edgar Simonds

Letters Patent 418,369 issued December 31, 1889 to George E. Huff

Letters Patent 433,651 issued August 5, 1890 to Lawrence Furlong, assignor to Frederick C. Rockwell
New Britain Letters Patent 497,515 issued May 16, 1893 to Thomas H. Brady
New Haven Letters Patent 96,198 issued October 26, 1869 to Charles A. Bush of New London, Connecticut, assignor for two-thirds of his rights to Henry P. Ostrum and T. Clifford Rush of New Haven, Connecticut.
New London Letters Patent 96,198 issued October 26, 1869 to Charles A. Bush, assignor for two-thirds of his rights to Henry P. Ostrum and T. Clifford Rush of New Haven, Connecticut.
North Greenwich Letters Patent 70,132 issued October 22, 1867 to Daniel W. Teller and William Savage, assignors to Themselves and W.H. Hoag of New York City
Norwalk Letters Patent 869,163 issued October 22, 1907 to William J. Devine
Torrington Letters Patent 1,014,934 issued January 16, 1912 to George Baker
Wallingford Letters Patent 66,054 issued June 25, 1867 to Daniel Stebbins, assignor to himself and E. Morse of the same place
Waterbury Letters Patent 550,673 issued December 3, 1895 to Frank G. Geron, assignor of one-half to James F. Gaffney
District of Columbia
 
Washington, D.C. Letters Patent 8,419 issued October 14, 1851 to Z.C. Robbins

Letters Patent 112,281 issued February 28, 1871 to Zenas C. Robbins

Letters Patent 121,368 issued November 28, 1871 to Minard Y. Holley

Letters Patent 549,443 issued November 5, 1895 to Joseph Collins
Florida
 


Howell Letters Patent 1,008,087 issued November 7, 1911 to James M. Sweeney
Pensacola Letters Patent 149,763 issued April 14, 1874 to Charles L. Le Baron

Letters Patent 154,258 issued August 18, 1874 to Charles L. Le Baron
Georgia
 


Jesup Letters Patent 1,188,599 issued June 27, 1916 to Salem L. Youmans and James A. McLaughlin
West Point Letters Patent 139,436 issued May 27, 1873 to Isaac I. Tatom
Illinois
 


Batavia Letters Patent 93,410 issued August 10, 1869 to John Burnham
Chicago Letters Patent 289,449 issued December 4, 1883 to Necter Rousseau, assignor of one-half to James W. Brennan

Letters Patent 349,788 issued September 28, 1886 to Nathan T. Finch

Letters Patent 522,302 issued July 3, 1894 to Elias Nashold, assignor of two-fifths to Henry W. Baskette

Letters Patent 545,620 issued September 3, 1895 to Montraville M. Wood

Letters Patent 660,271 issued October 23, 1900 to Robert H. Henderson and John G. Henderson

Letters Patent 878,949 issued February 11, 1908 to John H. Hanson

Letters Patent 970,078 issued September 13, 1910 to John A. Meurling
Macomb Letters Patent 1,127,776 issued February 9, 1915 to Charles W. Kettron, assignor to Illinois Electric Porcelain Co.

Letters Patent 1,429,079 issued September 12, 1922 issued to Charles W. Kettron, assignor to Illinois Electical Porcelain Co.
Marseilles Letters Patent 536,684 issued April 2, 1895 to Frank O. Creager
Princeton Letters Patent 996,782 issued July 4, 1911 to William S. Moore
Pulaski County Letters Patent 161,058 issued March 23, 1875 to George S. Pidgeon
Quincy Letters Patent 840,336 issued December 25, 1906 to Alfred Johnson
Winchester Letters Patent 757,765 issued April 19, 1904 to John W. Osborne
Indiana
 


Elwood Letters Patent 120,884 issued November 14, 1871 to George W. Kidwell
Indianapolis Letters Patent 296,330 issued April 8, 1884 to James F. Gilliland, assignor to John B. Bennett and August B. Meyer

Letters Patent 981,074 issued January 10, 1911 to Henry D. Dupont
Lafayette Letters Patent 440,042 issued November 4, 1890 to Willaim Kessler
Iowa
 


Belle Plaine Letters Patent 753,398 issued March 1, 1904 to Emory C. Hunt, assignor of one-half to Charles W. E. Snyder of Benton County, Iowa

Letters Patent 776,514 issued December 6, 1904 to Emory C. Hunt, assignor of one-half to Charles W. E. Snyder of Benton County, Iowa
Benton County Letters Patent 753,398 issued March 1, 1904 to Emory C. Hunt of Belle Plaine, Iowa, assignor of one-half to Charles W. E. Snyder of Benton County, Iowa

Letters Patent 776,514 issued December 6, 1904 to Emory C. Hunt of Belle Plaine, Iowa, assignor of one-half to Charles W. E. Snyder of Benton County, Iowa
Burlington Letters Patent 70,052 issued October 22, 1867 to John L. Waite
Cedar Rapids Letters Patent 911,864 issued February 9, 1909 to Esar-Haddon Ball
Kansas
 


Junction City Letters Patent 310,059 issued December 30, 1884 to Hamilton L. James
Kentucky
 


Covington Letters Patent 122,015 issued December 19, 1871 to Robert Hemingray

Letters Patent 242,825 issued June 14, 1881 to Robert Hemingray
Louisiana
 


Pineville Letters Patent 1,521,433 issued December 30, 1924 to Robert W. Charlton
Maine
 
Bar Harbour Letters Patent 592,505 issued October 26, 1897 to Wellington Barbour
Norridgewock Letters Patent 307,916 issued November 11, 1884 to John S. Cleveland and George F. Kent
Maryland
 


Baltimore Letters Patent 129,465 issued July 16, 1872 to Augustus G. Davis

Letters Patent 136,191 issued February 25, 1873 to James H. Thomas

Letters Patent 305,020 issued September 9, 1884 to John Anthony Ruth

Letters Patent 527,254 issued October 9, 1894 to William D. Trimble
Chillicothe Letters Patent 965,723 issued July 26, 1910 to John Fred Malthaner
North East Letters Patent 1,290,540 issued January 7, 1919 to Gustave Glocker
Port Deposit Letters Patent 183,865 issued October 31, 1876to David M. Reynolds
Massachusetts
 


Boston Letters Patent 51,934 issued January 9, 1866 to A.B. Ely

Letters Patent 56,542 issued July 24, 1866 to A. B. Ely

Letters Patent 87,187 issued February 23, 1869 to John M. Merrick, Jr.

Letters Patent 105,834 issued July 26, 1870 to Samuel Oakman

Letters Patent 107,303 issued September 13, 1870 to J.B. Stearns

Letters Patent 132,214 issued October 15, 1872 to Samuel Oakman

Letters Patent 132,215 issued October 15, 1872 to Samuel Oakman

Letters Patent 306,146 issued October 7, 1884 to Lawrence B. Gray

Letters Patent 306,147 issued October 7, 1884 to Lawrence B. Gray and Joseph Ham

Letters Patent 316,469 issued April 28, 1885 to Joseph Locke and William Bowker of Medford, Massachusetts, assignors, by Mesne assignments, to themselves and Robert Williams of Boston, Massachusetts

Letters Patent 444,317 issued January 6, 1891 to John S. Potter of Newton, Massachusetts and David C. Carrwright of Boston, Massachusetts

Letters Patent 469,940 issued March 1, 1892 to Charles N. Hammond

Letters Patent 477,980 issued June 28, 1892 to Herbert C. Wirt assigned to Thomson-Houston Electrical Co., Connecticut

Letters Patent 482,913 issued September 20, 1892 to Herbert H. Brooks of Cambridge, Massachusetts, assignor of one-half to Augustus T. Clark of Boston, Massachusetts

Letters Patent 502,614 issued August 1, 1893 to Edward H. Clarke of Lynn, Massachusetts, assignor of one-half to Solomon Eaton of Boston, Massachusetts

Letters Patent 511,611 issued December 26, 1893 to Charles N. Hammond, assigned to Hammond Cleat and Insulator Company, Boston, Massachusetts

Letters Patent 511,612 issued December 26, 1893 to Charles N. Hammond

Letters Patent 518,301 issued April 17, 1894 to Herbert C. Wirt, assignor to G.E. Co. of Boston

Letters Patent 524,850 issued August 21, 1894 to Charles N. Hammond

Letters Patent 539,040 issued May 14, 1895 to Leonard H. Des Isles, assignor of one-third to F. S. Palmer

Letters Patent 558,165 issued April 14, 1896 to Frederic B. Evans of Clinton, Massachusetts, assignor of one-half to Theodore Gould, Jr. of Boston, Massachusetts

Letters Patent 631,234 issued August 15, 1899 to Henry M. Stevens, assignor of one-half to Petingill Andrews Company

Letters Patent 964,586 issued July 19, 1910 to John Russell Tufts, Jr, of Weymouth, Massachusetts, assignor of one-half to F.W. Clark of Boston, Massachusetts
Brookline Letters Patent 825,954 issued July 17, 1906 to Charles C. Blake
Cambridge Letters Patent 8,418 issued October 14, 1851 to John Montgomery Batchelder

Letters Patent 21,492 issued September 14, 1858 to Moses G. Farmer of Salem, Massachusetts and John M. Batchelder of Cambridge, Massachusetts

Letters Patent 482,913 issued September 20, 1892 to Herbert H. Brooks of Cambridge, Massachusetts, assignor of one-half to Augustus T. Clark of Boston, Massachusetts
Canton Letters Patent 1,048,736 issued December 31, 1912 to Benjamin Richards
Clinton Letters Patent 558,165 issued April 14, 1896 to Frederic B. Evans, assignor of one-half to Theodore Gould, Jr. of Boston, Massachusetts
Fall River Letters Patent 505,215 issued September 19, 1893 to Elisha W. Buffington, assignor of one-half to Albert F. Dow

Letters Patent 505,912 issued October 3, 1893 to Elisha W. Fuffington, assignor of one-half to Albert F. Dow

Letters Patent 544,501 issued August 13, 1895 to Elisha W. Buffington, assignor of one-half to Albert F. Dow

Letters Patent 864,947 issued September 3, 1907 to Elisha W. Buffinton, assignor of one-half to Marietta M. Huggett
Lynn Letters Patent 8,316 issued August 26, 1851 to George W. Otis

Letters Patent 502,614 issued August 1, 1893 to Edward H. Clarke, assignor of one-half to Solomon Eaton of Boston, Massachusetts
Medford Letters Patent 316,469 issued April 28, 1885 to Joseph Locke and William Bowker of Medford, assignors, by Mesne assignments, to themselves and Robert Williams of Boston, Massachusetts
Melrose Letters Patent 288,360 issued November 13, 1883 to Samuel Oakman, assignor to the American Insulator Company of New York

Design Patent 14,674 issued February 12, 1884 to Samuel Oakman

Letters Patent 304,748 issued September 9, 1884 to Samuel Oakman
Newton Letters Patent 53,426 issued March 27, 1866 to Alfred B. Ely

Letters Patent 53,427 issued March 27, 1866 to Alfred B. Ely

Letters Patent 444,317 issued January 6, 1891 to John S. Potter of Newton, Massachusetts and David C. Carrwright of Boston, Massachusetts
Pittsfield Letters Patent 824,055 issued June 19, 1906 to Hary M. Acly, assigned to Stanley Electrical Mfg. Co.
Plainville Letters Patent 531,702 issued January 1, 1895 to Joseph. H. Swift and William F. Maintien
Quincy Letters Patent 324,692 issued August 18, 1885 to George W. Hill
Reading Letters Patent 243,782 issued July 5, 1881 to Thomas J. Mayall
Salem Letters Patent 21,492 issued September 14, 1858 to Moses G. Farmer of Salem, Massachusetts and John M. Batchelder of Cambridge, Massachusetts

Letters Patent 124,199 issud March 5, 1872 to Moses G. Farmer

Letters Patent 124,200 issud March 5, 1872 to Moses G. Farmer

Letters Patent 129,721 issued July 23, 1872 to Moses G. Farmer
Springfield Letters Patent 271,825 issued February 6, 1883 to Henry G. Fiske
Weymouth Letters Patent 964,586 issued July 19, 1910 to John Russell Tufts, Jr, of Weymouth, Massachusetts, assignor of one-half to F.W. Clark of Boston, Massachusetts
Whitman Letters Patent 422,651 issued March 4, 1890 to George E. Stanley
Winthrop Letters Patent 1,427,953 issued September 5, 1922 to Arthur W. Harrison, assignor to Porcelain Applieance Corp. of Wilmington, Delaware
Michigan
 


Ann Arbor Letters Patent 75,365 issued March 10, 1868 to Alfred H. Castle

Letters Patent 79,951 issud July 14, 1868 to A. H. Castle
Athens Design Patent 44,117 issued May 27, 1913 to Charles H. Waterman
Detroit Letters Patent 303,936 issued August 19, 1884 to Emil F. Krell assignor of three-fifths to Orville W. Owen
Marshall Letters Patent 286,681 issued October 16, 1883 to William J. Bowen of Norwalk, Ohio, assignor to himself, T. Keckeler of Cincinnati, Ohio and Z. C. Thiwing of Marshall, Michigan
Minnesota
 


St. Paul Letters Patent 1,954,952 issued April 10, 1934 to Edward L. Klingel

Letters Patent 2,307,277 issued January 5, 1943 to Edward L. Klingel
Mississippi
 


Bay St. Louis Letters Patent 332,061 issued December 8, 1885 to Benjamin Noel Deblieux
Missouri
 


St. Louis Letters Patent 8,138 issued October 14, 1851 to John Yandell

Letters Patent 22,188 issued November 30, 1858 to N.N. McLeod

Letters Patent 699,761 issued May 13, 1902 to Henry F. Kretzer

Letters Patent 978,941 issued December 20, 1910 to Frank Schimpf
Salem Letters Patent 1,029,980 issued June 18, 1912 to John Ellis
Montana Territory
 


Missoula Letters Patent 303,483 issued August 12, 1884 to Charles De Roy Bailey
New Hampshire
 


Manchester Letters Patent 297,101 issued April 22, 1884 to Luther C. Baldwin and John C. Thurston
South Lyndeborough Letters Patent 324,957 issued August 25, 1885
New Jersey
 


Asbury Park Letters Patent 403,727 issued May 21, 1889 to Jacob C. Berrang
Boonton Letters Patent 480,011 issued August 2, 1892 to John J. Green, assignor to Security Insulator Company of New Jersey
Buttzville Letters Patent 2,304,204 issued December 8, 1942 to Borah B. Ratzman
Elizabeth Letters Patent issued July 6, 1869 to John W. Fry

Letters Patent 114,924 issued May 16, 1871 to Stephen Chester

Letters Patent 464,770 issued December 8, 1891 to John J. Green, Boonton and George C. Brown
Elmora Letters Patent 290,922 issued December 25, 1883 to Frank L. Pope
Jersey City Letters Patent 11,539 issued August 15, 1854 to Timothy U. Webb

Letters Patent 115,521 issued May 30, 1871 to Horatio Read, assignor to himself and B.B. Hagerty of Brooklyn, New York

Letters Patent 135,334 issued January 28, 1873 to Nathan Hendricks

Letters Patent 306,718 issued October 21, 1884 to Eduard Clark

Letters Patent 306,719 issued October 21, 1884 to Eduard Clark

Letters Patent 919,386 issued April 27, 1909 to Ferdinand Schaub

Letters Patent 1,049,405 issued January 7, 1913 to Ferdinand Schaub

Letters Patent 1,056,711 issued March 18, 1913 to Ferdinand Schaub

Letters Patent 1,474,736 issued November 20, 1923 to Ferdinand Schaub

Letters Patent 1,178,539 issued April 11, 1916 to Ferdinand Schaub
Paterson Letters Patent 304,699 issued September 9, 1884 to George L. Broomhall

Letters Patent 319,447 issued June 9, 1885 to George L. Broomhall
Plainfield Letters Patent 272,069 issued February 13, 1883 to Theodore Mack

Letters Patent 280,947 issued July 10, 1883 to Percy C. Ohl

Letters Patent 293,242 issued February 12, 1884 to Albert W. Hale

Letters Patent 294,384 issued March 4, 1884 to Albert W. Hale

Letters Patent 301,446 issued July 1, 1884 to Albert W. Hale
Trenton Letters Patent 508,687 issued November 14, 1893 to Frederic A. Duggan

Lettters Patent 575,090 issued January 12, 1897 to Carl F. Adams

Letters Patent 806,588 issued December 5, 1905 to Herbert Sinclair (founder of Star Porcelain Co. in 1899)

Letters Patent 855,208 issued May 28, 1907 to Herbert Sinclair (founder of Star Porcelain Co. in 1899)

Letters Patent 1,147,498 issued July 20, 1915 toEdgar H. Freeman, assigned to Trenton Porcelain Co.
Weehawken Letters Patent 785,561 issued March 21, 1905 to John M. Latimer, assignor to Consolidated Fire Alarm Co., New York City, New York
New York
 


Albany Letters Patent 518,907 issued April 24, 1894 to Horace B. Wyman of Slingerlands, New York, assignor of one-half to Albert C. Goodwin of Albany, New York
Ballston Spa Letters Patent 911,429 issued February 2, 1909 to Roderick McLennan
Brooklyn Letters Patent 94,037 issued August 24, 1869 to Franklin Scott

Letters Patent 115,521 issued May 30, 1871 to Horatio Read of Jersey City, New Jersey, assignor to himself and B.B. Hagerty of Brooklyn, New York

Letters Patent 131,153 issued September 10, 1872 to Henry C. Deemer and Joseph W. Eufinger

Design Patent 9,858 issued March 20, 1877 to James M. Brookfield

Design Patent 9,956 issued May 8, 1877 to James M. Brookfield

Design Patent 10,981 issued January 14, 1879 to James M. Brookfield

Letters Patent 296,688 issued April 8, 1884 to David Haines of New York and Stephen D. Lake of Brooklyn

Letters Patent 303,399 issued August 12, 1884 to George Washington Prince

Letters Patent 328,929 issued October 27, 1885 to William N. Fawcett and George F. Huntley

Letters Patent 458,964 issued September 1, 1891 to Henry P. Ball
Ellenville Letters Patent 282,989 issued August 14, 1883 to Mathew Johnson
Fort Edward Letters Patent 23,373 issued March 29, 1859 to Russel Hickok
Haverstaw Letters Patent 593,689 issued November 16, 1897 to Louis F. Rembe
Ithaca Letters Patent 71,564 issued November 26, 1867 to Merritt L. Wood, assignor to himself, Samuel Porter and L. M. Monroe
Mamaroneck Letters Patent 39,613 issued August 18, 1863 to Edwin Eagles, assignor to himself and J.H. Guion

Letters Patent 66,215 issued July 2, 1867 to Richard Calrow
Morrisania Letters Patent 99,873 issued February15, 1870 (antidated February 3, 1870) to Stephen L. Finley, assignor to himself and Marshall Lefferts of New York City
New York Letters Patent 47,141 issued April 4, 1865 to S.F. Van Choate

Letters Patent 48,906 issued July 25, 1865 to Louis A. Cauvet of No. 75-1/2 New St. 

Letters Patent 49,482 issued August 15, 1865 to Henry H. Ward, assignor to S.F. Van Choate and Stuart Gwynne

Letters Patent 58,594 issued October 9, 1866 to W.H. Burnap and J.D. Brassington

Letters Patent 64,315 issued April 30, 1867 to Stephen C. Hendrickson

Letters Patent 70,132 issued October 22, 1867 to Daniel W. Teller and William Savage of North Greenwich, Connecticut, assignors to themselves and W.H. Hoag of New York City

Letters Patent 75,815 issued March 24, 1868 to Cromwell Fleetwood Varley

Letters Patent 99,145 issued January 25, 1870 to Homer Brooke

Letters Patent 99,873 issued February15, 1870 (antidated February 3, 1870) to Stephen L. Finley of Morrisania, New York, assignor to himself and Marshall Lefferts of New York City

Letters Patent 103,555 issued May 31, 1870 to James M. Brookfield

Letters Patent109,879 issued December 6, 1870 to Manuel De Montufar

Letters Patent 113,393 issued April 4, 1871 to William Brookfield

Letters Patent 126,027 issued April 23, 1872 to Joseph I. Conklin, Jr.

Letters Patent 154,451 issued August 25, 1874 to Homer Brooke

Letters Patent 158,868 issued January 19, 1875 to Isaac Smith

Letters Patent 201,544 issued March 19, 1878 to Emma Matthewman, administratrix of Joseph Matthewman, deceased

Letters Patent 228,077 issued May 25, 1880 to William F. Jobbins

Letters Patent 230,290 issued July 20, 1880 to Charles H. Lilly

Letters Patent 252,857 issued January 24, 1882 to Charles L. Gore, assignor of one-fourth to John D. Townsend

Letters Patent 269,933 issued January 2, 1883 to Paget Higgs and William Courtenay

Letters Patent 286,801 issued October 16, 1883 to Bradley A. Fiske and Samuel D. Mott

Letters Patent 288,360 issued November 13, 1883 to Samuel Oakman of Melrose, Massachusetts, assignor to the American Insulator Company of New York

Letters Patent 294,563 issuedMarch 4, 1884 to William W. Beach

Letters Patent 296,688 issued April 8, 1884 to David Haines of New York and Stephen D. Lake of Brooklyn

Letters Patent 296,881 issued April 15, 1884 to John A. Seely

Letters Patent 316,812 issued April 28, 1885 to John O'Brien, assignor to William Brookfield

Letters Patent 321,646 issued July 7, 1885 to Edward T. Schoonmaker, assignor of one-half to John E. Smith

Letters Patent 745,999 issued December 8, 1903 to Sigmund Bower, assignor of one-half to Joseph L. Levy

Letters Patent 785,561 issued March 21, 1905 to John M. Latimer of Weehawken, New Jersey, assignor to Consolidated Fire Alarm Co., New York City, New York

Letters Patent 906,296 issued December 8, 1908 to Charles Rosenberg and Vernon T. Bailey

Letters Patnt 1,194,747 issued August 15, 1916 to Herbert R. Kells
Palmyra Letters Patent 504,059 issued August 29, 1893 to George W. Blackburn
Pen Yan Letters Patent 995,838 issued June 20, 1911 to Fred B. Bower, assignor of one-half to Edia R. Ramsey
Poughkeepsie Letters Patent 1,329,656 issued February 3, 1920 to Arthur H. Fargo assignor to Charles Tremain
Rochester Letters Patent 317,479 issued May 5, 1885 to William H. Wright
Schenectady Letters Patent 769,639 issued September 6, 1804 to Howard R. Sargent, assigned to G.E. Co.

Letters Patent 917,207 issued April 6, 1909 to August Weber, Jr., assignor to August Weber, Sr.
Slingerlands Letters Patent 518,907 issued April 24, 1894 to Horace B. Wyman, assignor of one-half to Albert C. Goodwin of Albany, New York
Syracuse Letters Patent 66,453 issued July 9, 1867 to John F. Boynton

Letters Patent 476,827 issued June 14, 1892 to A. P. Seymour

Letters Patent 483,771 issued October 4, 1892 to A.P. Seymour
Tarrytown Letters Patent 398,025 issued February 19, 1889 to Warren C. Brown
Ohio
 


Akron Letters Patent 551,032 issued December 10, 1895 to Jas. R. Hemphill
Carey Letters Patent 1,042,677 issued October 29, 1912 to Robert D. Hilty, assignor of one-half to Ira N. Zeis

Letters Patent 1,048,850 issued December 31, 1912 to John W. Moore

Letters Patent 1,163,114 issued December 7, 1915 to Loren Stahl

Letters Patent 1,176,801 issued on February 6, 1917 to William H. Williams

Re-issued Patent 14,256 on February 16, 1917 to William H. Williams

Letters Patent 1,273,313 issued August 23, 1918 to Thomas W. Beatty
Cincinnati Letters Patent 52,761 issued February 20, 1866 issued to W.W. Smith

Letters Patent 53,246 issued March 13, 1866 to W.W. Smith

Letters Patent 64,654 issued May 14, 1867 to George Floyd

Letters Patent 224,504 issued February 10, 1880 to Josephus C. Chambers, assignor to the Chambers National Lightning Protection Company

Letters Patent 234,523 issued November 16, 1880 to Charles Bigeon

Letters Patent 262,210 issued August 8, 1882 to William H. Eckert, Edward Eckert, and John A. Seely

Letters Patent 286,681 issued October 16, 1883 to William J. Bowen of Norwalk, Ohio, assignor to himself, T. Keckeler of Cincinnati, Ohio and Z. C. Thiwing of Marshall, Michigan

Letters Patent 303,877 issued August 19, 1884 to Charles Neblett

Letters Patent 479,134 issued July 19, 1892 to Chauncey E. Conover

Letters Patent 503,384 issued August 15, 1893 to Jacob P. Pawolowski

Letters Patent 520,412 issued May 29, 1894 to Chauncy E. Conover.

Letters Patent 525,001 issued August 28, 1894 to Leonard W. Bradley

Letters Patent 934,463 issued September 21, 1909 to William F. Ritter
Cleveland Letters Patent 105,625 issued July 26, 1870 to William W. Baldwin

Letters Patent 122,961 issued January 23, 1872 to Chester H. Pond

Letters Patent 287,830 issued November 6, 1883 to Charles C. Hinsdale

Letters Patent 2,912,482 issued November 10, 1959 to Raymond G. Horrocks of Lakewood, OH; Carroll de V. Miller of Rocky River, OH; and Theordore J. Brenner of Rocky River, OH.  Assigned to PLM Products, Inc. of Cleveland, OH for a triangular shaped aerial Spacer .
Columbus Letters Patent 971,683 issued October 4, 1910 to Harley R. Markel

Letters Patent 992,570 issued May 16, 1911 to Harley R. Markel

Letters Patent 1,061,620 issued May 13, 1913 to Harley R. Markel

Letters Patent 1,201,325 issued October 17, 1916 to Harley R. Markel
Dayton Letters Patent 411,801 issued October 1, 1889 to John R. Fletcher

Letters Patent 878,302 issued February 4, 1908 to Harley R. Markel
East Liverpool Letters Patent 1,177,996 issued April 4, 1916 to William J. Curry and William A. Andrews

Letters Patent 1,354,396 issued September 28, 1920 to Harry Edvard Hoenig, assignor of one-half to Josiat T. Smith

Letters Patent 1,640,815 issued August 30, 1927 to Horace D. Brookman
Elyria Letters Patent 75,889 issued March 24, 1868 to J. L. Finn
Findlay Letters Patent 1,021,059 issued March 26, 1912 to Willis R. Markley

Letters Patent 1,060,886 issued May 6, 1913 to John E. Bicknell, assignor to Findlay Electrical Porcelain Company

Design Patent 108,489 issued February 15, 1938 issued to P.P. Inc., Findlay, Ohio by Rolland E. Dalton of Fostoria, Ohio
Fostoria Design Patent 108,489 issued February 15, 1938 issued to P.P. Inc., Findlay, Ohio by Rolland E. Dalton of Fostoria, Ohio
Hillsborough Letters Patent 53,201 issued March 13, 1866 to William W. Waddell
Mulberry Letters Patent 280,324 issued June 26, 1883 to John E. Noble, assignor of one-sixth to Charles J. Leming of Mulberry, Ohio
Norwalk Letters Patent 286,681 issued October 16, 1883 to William J. Bowen, assignor to himself, T. Keckeler of Cincinnati, Ohio and Z. C. Thiwing of Marshall, Michigan
Painesville Letters Patent 109,461 issued November 22, 1870 to Ashbel Grattan Smith and William Pettingell, assignors to themselves and William H. Fowler
Steubenville Letters Patent 756,724 issued April 5, 1904 to John C. Snodgrass

Letters Patent 815,506 issued March 20, 1906 to Herbet S. Blynt
Zanesville Letters Patent 184,509 issued November 21, 1876 to Robert A. Cunningham and David F. Crowell
Oregon
 


Portland Letters Patent 783,348 issued February 21, 1905 to Evans C. Wright, assignor of one-half to Francis J. McHenry
Pennsylvania
 


Allegheny Letters Patent 887,520 issued May 12, 1908 to John W. Rehling
Allegheny County Letters Patent 1,042,372 issued October 22, 1912 to John R. Harris, Chartiers Township, Allegheny County

Letters Patent 1,302,158 issued April 29, 1919 to John R. Harris, Chartiers Township, Allegheny County
Bala Letters Patent 526,472 issued September 25, 1894 to George A. Webster, assignor of one-half to Arthur J. Ingraham of Philadelphia, Pennsylvania and Samuel H. Brown of Bala, Pennsylvania
Beaver Letters Patent 876,059 issued January 7, 1908 to William H. Irons
Beaver Falls Letters Patent 1,755,587 issued April 22, 1930 to Willaim Broad of Beaver Falls, Pennsylvania, assignor of three-fourths to Harry E. McLain of Pittsburgh, Pennsylvania
Carbondale Letters Patent 123,198 issued January 30, 1872 to John Robertson
Conshohocken Letters Patent 41,157 issued January 5, 1864 to James Holland
Crafton Letters Patent 1,079,239 issued November 18, 1913 to John R. Harris
East Birmingham Letters Patent 110,645 issued January 3, 1871 to John Garity
Gap Letters Patent 145,997 issued December 30, 1873 to Christian Fox and Elisha G. Heston
Greencastle Letters Patent 1,218,181 issued March 6, 1917 to John W. Homer
Harrisburg Letters Patent 123,878 issued February 20, 1872 to David R. P. Emminger
Kinzer's P.O. Letters Patent 138,489 issued May 6, 1873 to Peter Eby and Michael B. Fenninger of near Kinzer's Post Office in the county of Lancaster.

Letters Patent 146,996 issued February 3, 1874 to Peter Eby of Salisbury Township near Kinzer's Post Office in Lancaster county
Lancaster Letters Patent 531,635 issued January 1, 1895 to Albert Iske
Lancaster county Letters Patent 138,489 issued May 6, 1873 to Peter Eby and Michael B. Fenninger of near Kinzer's Post Office in the county of Lancaster.

Letters Patent 146,996 issued February 3, 1874 to Peter Eby of Salisbury Township near Kinzer's Post Office in Lancaster county
Norristown Letters Patent 450,384 issued April 14, 1891 to Daniel A. Berrolette
Peckville Letters Patent 621,661 issued March 21, 1899 to Morton Harloe and Wilton S. Bloes
Philadelphia Letters Patent 45,221 issued November 29, 1864 to David Brooks

Letters Patent 63,206 issued March 26, 1867 to David Brooks

Letters Patent 69,622 issued October 8, 1867 to David Brooks

Letters Patent 103,122 issued May 17, 1870 to Robert Breckenridge Baker

Letters Patent 105,656 issued July 26, 1870 to William H. Dechant, assignor to David Brooks

Letters Patent 200,124 issued February 12, 1878 to David Brooks, Jr.

Letters Patent 254,610 issued March 7, 1882 to William H. Capewell

Letters Patent 274,821 issued March 27, 1883 to William H. Reiff, assignor of one-third to Andrew M. Seip, Jr. of Philadelphia, Pennsylvania

Letters Patent 293,901 issued February 19, 1884 to Thomas McGrory

Letters Patent 310,484 issued January 6, 1885 to George W. Weyman, assignor of one-half to Charles T. Weyman

Letters Patent 315,660 issued April 14, 1885 to Henry Prenzel

Letters Patent 323,055 issued July 28, 1885 to Thomas McGrory

Letters Patent 328,728 issued October 20, 1885 to Leonard G. Smith

Letters Patent 526,472 issued September 25, 1894 to George A. Webster, assignor of one-half to Arthur J. Ingraham of Philadelphia, Pennsylvania and Samuel H. Brown of Bala, Pennsylvania
Pittsburgh Letters Patent 70,727 issued November 12, 1867 to Thomas J. Lockhart and Josiah Locke

Letters Patent 107,075 issued September 6, 1870 to Samuel McKee of the firm S. McKee & Co., No. 62 Water Street

Letters Patent 682,831 issued September 17, 1901 to Henry D. Murdock

Letters Patent 897,669 issued September 1, 1908 to Frank J. Seigwart

Letters Patent 1,217,315 issued February 27, 1917 to Julian H. Kendig

Letters Patent 1,232,354 issued July 3, 1917 to John E. Mair, assignor to The Brunt Tile & Porcelain Company, Columbus, OH

Letters Patent 1,755,587 issued April 22, 1930 to Willaim Broad of Beaver Falls, Pennsylvania, assignor of three-fourths to Harry E. McLain of Pittsburgh, Pennsylvania
Reading Letters Patent 872,993 issued December 3, 1907 to Arthur S. Deem, assignor of one-half to Isaac Bear
West Elizabeth Letters Patent 297,865 issued April 29, 1884 to William Snee, assignor of one-half to Milton A. Walton of Cameron, West Virginia
Wilkinsburg Letters Patent 818,186 issued April 17, 1906 to Henry D. Murdock
Rhode Island
 


Woonsocket Letters Patent 268,075 issued November 28, 1882 to Gouverneur M. Brown
Texas
 


Cameron Letters Patent 1,718,259 issued June 25, 1929 to A.C. Scott of Dallas, Texas and William G. Rupe of Cameron, Texas
Dallas Letters Patent 1,718,259 issued June 25, 1929 to A.C. Scott of Dallas, Texas and William G. Rupe of Cameron, Texas
Vermont
 


Bennington Letters Patent 697,001 issued April 8, 1902 to William H. Nichols, assignor of one-half to Elmer E. Larrabee
St. Albans Letters Patent 97,318 issued November 30, 1869 to Alfred G. Safford
Windsor Letters Patent 845,544 issued February 26, 1907 to Waldo C. Gordon, assigned to The Electric Good Mfg. Co., Maine
Virginia
 


Hanover C. H. Letters Patent 217,427 issued July 8, 1879 to Burnley Taylor
Richmond Letters Patent 861,275 issued July 30, 1907 to Constantine Gallagher
Washington
 


Seattle Letters Patent 874,445 issued December 24, 1907 to Albert L. Shears
West Virginia
 


Cameron Letters Patent 297,865 issued April 29, 1884 to William Snee of West Elizabeth, Pennsylvania, assignor of one-half to Milton A. Walton of Cameron, West Virginia
Huntington Letters Patent 281,452 issued July 17, 1883 to Thomas L. Chapman
Morgantown Letters Patent 97,392 issued November 30, 1869 to W. D. Guseman and E.C. Bright
New Cumberland Letters Patent 1,139,748 issued May 18, 1915 to Thomas W. Beatty
Parkersburg Letters Patent 1,429,369 issued September 19, 1922 to William Morrill Parker assignor to J.H. Parker & Sons, Inc.
Wheeling Letters Patent 1,311,483 issued August 29, 1919 to Frank M. Amos assignor to Wheeling Tile Co.

Letters Patent 1,335,634 issued March 30, 1920 to Frank M. Amos assignor to Wheeling Tile Co.

Letters Patent 1,376,307 issued April 26, 1921 to Frank M. Amos assignor to Wheeling Tile Co.

Letters Patent 1,390,118 issued September 6, 1921 to Peter C.C. Fridrichsen
Wisconsin
 


Milwaukee Letters Patent 105,252 issued July 12, 1870 to Orris W. Robertson
Oak Creek Letters Patent 65,886 issued June 18, 1867 to Alfred B. Day
Works Consulted

Branham, Aubrey, and Penelope Branham (compilers).  (1972). A Collection of Insulator Patents Issued by the United States Patent Office: 1851-1885 .  Parts One and Two.  N.P.: n.p.

Tod, Jack W.  (1985).  Insulator Patents: 1880-1960.  Phoenix, AZ: Privately published.