Title:
Fire detection apparatus
United States Patent 3017513
US Patent References:
/0842314.html
- - 0842314

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- - 2491192

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- - 2674155

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- - 2738432

Total-radiation pyrometer
- - 2798962


Inventors:
Messelt, Stephen J.
Publication Date:
01/16/1962
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Assignee:
PERKIN ELMER CORP
Primary Class:
250/347
Other Classes:
250/353, 356/141.200, 250/339.150, 374/124
International Classes:
G01J5/04; G08B17/12
US Patent References:
2871366Apparatus for sensing radioactivity