Title:
Automatic alarm system
United States Patent 3111656
US Patent References:
Apparatus for recording an oscillographic record
- - 2447752
Inaudible control circuit for starting and stopping phonograph systems
- - 2552788
System for indicating time-space lag and lead
- - 2656528
Fire alarm system
- - 2673975
/2899674.html
- - 2899674
Apparatus for recording an oscillographic record
- - 2447752
Inaudible control circuit for starting and stopping phonograph systems
- - 2552788
System for indicating time-space lag and lead
- - 2656528
Fire alarm system
- - 2673975
/2899674.html
- - 2899674
Inventors:
Barrett, Nat A.
Fuller, Neal H.
Fuller, Neal H.
Publication Date:
11/19/1963
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Export Citation:
Assignee:
Barrett, Nat A.
Fuller, Neal H.
Fuller, Neal H.
Primary Class:
Other Classes:
340/539.220, 340/539.100, 346/136, 218/89, 455/18, 341/174, 346/33R, 340/527, 455/66.100, 340/593
International Classes:
G08B17/00; G08B25/10