H - Electricity – 01 – H
Patent
H - Electricity
01
H
340/187, 356/22,
H01H 13/02 (2006.01) H01H 13/70 (2006.01) H05K 1/14 (2006.01) H05K 1/05 (2006.01)
Patent
CA 1100165
Abstract of the Disclosure A push button switch assembly has at least one of the conventional PCB's replaced by a porcelain coated steel plate. The contact circuit for the pushbutton switches is formed on the top surface of the steel plate. It is also possible to replace both PCB's of a conventional switch by forming a second circuit on the under surface of the steel plate, with the electrical devices mounted thereon. Use of the steel plate enables the normal metal mounting plate to be omitted. -i-
320732
Dudley Phillip J.
Lenaerts George V.
Perks Roger
Jelly Sidney Thomas
Northern Telecom Limited
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