Title:
Magnetic intruder and fire deterctor
United States Patent 3161742
US Patent References:
Burglar alarm system
- - 2877361
Defeat resistant burglar alarm contact
- - 2912540
Magnetically actuated switches
- - 2924682
Reed-contact thermo relay
- - 3008019
Temperature responsive control device
- - 3009047
Burglar alarm system
- - 2877361
Defeat resistant burglar alarm contact
- - 2912540
Magnetically actuated switches
- - 2924682
Reed-contact thermo relay
- - 3008019
Temperature responsive control device
- - 3009047
Inventors:
Bagno, Samuel M.
Publication Date:
12/15/1964
View Patent Images:
Export Citation:
Assignee:
SPECIALTIES DEV CORP
Primary Class:
Other Classes:
200/61.620, 361/179, 340/597, 335/207, 335/202, 340/547, 335/206, 335/146, 340/521
International Classes:
G08B13/08; H01H36/00; G08B13/02
Foreign References:
| GB849945A |