Apparatus for photoelectric intruder detection
United States Patent 2912683
US Patent References:
Method of and means for controlling electric apparatus
- - 2099764
Foul detector and indicator for bowling alleys
- - 2417092
Method of and means for controlling electric apparatus
- - 2099764
Foul detector and indicator for bowling alleys
- - 2417092
Inventors:
Bagno, Samuel M.
Publication Date:
11/10/1959
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Assignee:
KIDDE & CO WALTER
Primary Class:
International Classes:
G08B13/183; G08B13/18
Foreign References:
| DE716039C |