Topic: Jeffery-Dewitt Insulator Co. - Topics - Michigan Memories Search Results

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1. Rugged Insulators, Catalog No. 4

Description:: 64-page illustrated Jeffery-Dewitt Insulator Co. trade catalog. Contents include common causes of insulator failure, manufacturing methods and routine tests, suspension and strain insulators, post type insulators, and foreign installations.
Date Issued:: 1923-01-01T00:00:00Z
Data Provider:: Detroit Historical Society
Collection:: Champion Spark Plug Co.

2. Rugged Insulators, Catalog No. 4

Description:: 64-page illustrated Jeffery-Dewitt Insulator Co. trade catalog. Contents include common causes of insulator failure, manufacturing methods and routine tests, suspension and strain insulators, post type insulators, and foreign installations.
Date Issued:: 1923-01-01T00:00:00Z
Data Provider:: Detroit Historical Society