Fire and burglar alarm system
United States Patent 2905762
US Patent References:
Remote control system
- - 2345472

Alarm system
- - 2498613

Telephonic alarm system
- - 2780671


Inventors:
Rettie, George W.
Hotchkiss, Robert D.
Publication Date:
09/22/1959
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Assignee:
Rettie, George W.
Hotchkiss, Robert D.
Primary Class:
379/40
Other Classes:
379/51, 379/44, 340/531, 340/521
International Classes:
G08B19/00; H04M11/04