PROPERTY PROTECTION ALARM SYSTEM
United States Patent 3544987
US Patent References:
Closure member operated switch
- - 2624792
Automobiles or like vehicles fitted with theft prevention devices
- - 2964733
Time switch and alarm
- - 3033948
Static logic annunciator
- - 3099824
System for signalling unauthorized displacement of an article
- - 3247502
Closure member operated switch
- - 2624792
Automobiles or like vehicles fitted with theft prevention devices
- - 2964733
Time switch and alarm
- - 3033948
Static logic annunciator
- - 3099824
System for signalling unauthorized displacement of an article
- - 3247502
Inventors:
Mcmann Jr., Renville H.
Kaiser, Arthur
Kaiser, Arthur
Publication Date:
12/01/1970
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Export Citation:
Assignee:
Renville Jr., Mcmann H.
Arthur, Kaiser
COLUMBIA BROADCASTING SYST INC
PINKERTON INC
Arthur, Kaiser
COLUMBIA BROADCASTING SYST INC
PINKERTON INC
Primary Class:
Other Classes:
340/539.100, 200/283, 340/327, 200/275, 200/241, 340/539.140, 340/547, 340/328, 200/5R
International Classes:
G08B13/22; G08B13/08