Fire alarm device
United States Patent 2777416
US Patent References:
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Inventors:
Messick, Willard C.
Publication Date:
01/15/1957
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Assignee:
FYR LARM CO INC
Primary Class:
116/106
Other Classes:
D10/120, 116/137R, 116/112
International Classes:
G08B17/04; G10K9/18; G10K9/00
US Patent References:
2211142Fire alarm
2483657Fire alarm device
2649752Self-contained fire alarm and fire extinguisher
Foreign References:
FR517072A