Canada Patents Related to Insulators Listed by Patent Number
| Patent # | Date | Inventor(s)/Assignee(s) | Description | Notes |
| 103,943 | 3/5/1907 | Louis Steinberg (sic, probably Steinberger) of New York City, NY, USA | High Potential Insulator | |
| 104,623 | 4/9/1907 | Louis Steinberger of New York City, NY, USA | Insulator | |
| 104,787 | 4/16/1907 | Louis Steinberger of New York City, NY, USA | Insulator for High Voltages | |
| 105,496 | 5/28/1907 | Alexander Ephraim Brown of Cleveland, Ohio, USA assigned to Brown Hoisting Machinery Company | Insulator for tension guys | |
| 105,550 | 5/28/1907 | Louis Steinberger of New York City, NY, USA | Insulator | |
| 105,551 | 5/28/1907 | Louis Steinberger of New York City, NY, USA | Insulator | |
| 212,737 | 9/2/1921 | William Ratzlaff of Hugoton, Kansas | No-tie insulator with a side slot |
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| 228,366 | 1/30/1923 | Albert Montan of North Battleford, Saskatchewan, Canada | No-tie insulator with a top slot |
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Contributors of Information
Howard, Dan. (December 2000). Editor of Old Familiar Strains, a newsletter for collectors of radio strain insulators. Provided copies of two Canadian patents of no-tie insulator styles.