Title:
Fire alarm
United States Patent 2999477


Inventors:
Pratt, Verneur E.
Pratt, Edmund C.
Application Number:
US81916359A
Publication Date:
09/12/1961
Filing Date:
06/09/1959
Assignee:
Pratt, Verneur E.
Pratt, Edmund C.
Primary Class:
Other Classes:
116/158
International Classes:
G08B17/02; G10K1/074
View Patent Images:
US Patent References:
2871815Fire detecting device1959-02-03
2625902Fire and burglar alarm1953-01-20
1415207Automatic alarm1922-05-09
0815111N/A1906-03-13
0565306N/A1896-08-04
Foreign References:
FR526262A1921-10-06