Publication: Electrical Record
New York, NY, United States
The R. Thomas & Sons Company, 39 Cortlandt Street, New York City, now has the exclusive right to make and market the P. E. M. Company knob, which is the two-piece porcelain insulator formerly known as the W. E. split knob, manufactured by the Porcelain Electrical Manufacturing Company, of Trenton, N. J. This insulator will now be known as the Thomas T. P. I. knob. This announcement is made by Larrabee & Nichols, owner of the patents, Bennington, Vt.
|Keywords:||R. Thomas & Sons Company : P. E. M. CO. Knob : Porcelain Electric Manufacturing Company|
|Researcher notes:||Company name may have been Porcelain Electric Mfg. Co. PEMCO went out of business in 1907.|
|Supplemental information:||Patent: 697,001|
|Date completed:||October 4, 2012 by: Elton Gish;|