AUTOMATIC IONIC FIRE ALARM SYSTEM
United States Patent 3500368
US Patent References:
Pressure compensated ionization chamber fire detector system
- - 3078450
Method and apparatus for detecting a hazardous condition
- - 3271756
Supervised alarm system
- - 2646556
Gas-responsive control apparatus
- - 2702898
Device for detecting the configuration of a burning flame
- - 3301307
Pressure compensated ionization chamber fire detector system
- - 3078450
Method and apparatus for detecting a hazardous condition
- - 3271756
Supervised alarm system
- - 2646556
Gas-responsive control apparatus
- - 2702898
Device for detecting the configuration of a burning flame
- - 3301307
Inventors:
Abe, Nagao
Publication Date:
03/10/1970
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Export Citation:
Assignee:
NITTAN CO LTD
Primary Class:
Other Classes:
327/399, 327/421, 327/428, 327/509, 340/629, 327/465
International Classes:
G01T7/12; G08B17/11; G08B17/113; G01T7/00; G08B17/10; G08B17/10
US Patent References:
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