Company Geneology

Date	Company Name	Event
	Line Material Company	Company founded
1949	McGraw Electric Company	Line Material Company acquired by McGraw Electric Company
1957	McGraw-Edison Company	Company name change
1985	Cooper Industries Cooper Power Systems, subsidiary	Cooper Industries merged with McGraw-Edison and acquired ownership in 1985.

 

Reference

Before the Ohio Environmental Protection Agency. In the Matter of Cooper Power Systems Inc. and Cooper Industries, Inc. Director's Final Findings and Orders. Administrative Orders on Consent. November 20, 1998.