Electric switch
United States Patent 2990460
US Patent References:
Electric circuit controller
- - 1998254

Delayed electric mercury switch
- - 2615100

Time delay mercury switch
- - 2851547


Inventors:
Worth, Sidney V.
Rebling, Robert C.
Publication Date:
06/27/1961
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Assignee:
ELECTRO CONTROLS INC
Primary Class:
200/33A
Other Classes:
200/34
International Classes:
B01J23/94; H01H29/10; B01J23/90; H01H29/00