Lamp changer
United States Patent 3259785
US Patent References:
/1062907.html
- - 1062907
Signal device
- - 2054013
Signal light
- - 2097250
Lamp changer mechanism and control circuit therefor responsive to both light emission and filament continuity
- - 3146375
/1062907.html
- - 1062907
Signal device
- - 2054013
Signal light
- - 2097250
Lamp changer mechanism and control circuit therefor responsive to both light emission and filament continuity
- - 3146375
Inventors:
Salerno, Paul G.
Publication Date:
07/05/1966
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Export Citation:
Assignee:
VAPOR CORP
Primary Class:
Other Classes:
315/89
International Classes:
F21V19/04; H05B39/10; H05B39/00