[Trade Journal]
Publication: Western Electrician
Chicago, IL, United States
vol. 9, no. 13, p. 184, col. 3
BUSINESS.
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The Knapp Electrical Works report a booming business on Safety wire and Perkins lamps. They are just placing a new lamp socket on the market, both key and keyless. This socket is very simple in design and it is claimed there is absolutely no danger from a short circuit.
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