Photoelectric lighting control
United States Patent 3240960

Inventors:
Woodward, Lewis J.
Publication Date:
03/15/1966
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Assignee:
Woodward, Lewis J.
Primary Class:
307/117
Other Classes:
361/173, 250/206, 250/214AL, 219/502, 968/626
International Classes:
G04C23/36; H01H37/32; G04C23/00; H01H37/00
Other References:
None