Title:
Photo-electric relay
United States Patent 3176196


Inventors:
Dunigan, Francis P.
Application Number:
US13032961A
Publication Date:
03/30/1965
Filing Date:
08/09/1961
Assignee:
MACHINERY ELECTRIFICATION INC
Primary Class:
Other Classes:
250/239
International Classes:
H01H47/24
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US Patent References:
2913637Photoconductive control circuit1959-11-17
1788111Street-lighting system1931-01-06