ALARM DEVICE
United States Patent 3424122
US Patent References:
Protective apparatus for safes and safety vaults
- - 1451581
Protective means for the containers of valuables
- - 1563176
/1701700.html
- - 1701700
Mechanical system for gas and smoke protection
- - 1863965
Thief detecting device
- - 3053416
Protective apparatus for safes and safety vaults
- - 1451581
Protective means for the containers of valuables
- - 1563176
/1701700.html
- - 1701700
Mechanical system for gas and smoke protection
- - 1863965
Thief detecting device
- - 3053416
Inventors:
Angelis, Sidney M. DE.
Publication Date:
01/28/1969
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Export Citation:
Assignee:
Sidney, Angelis M. DE.
Primary Class:
Other Classes:
116/104
International Classes:
E05G1/14; G08B15/00; E05G1/10; E05G1/00; G08B19/00
US Patent References:
| 3167050 | Emergency signaling device |