Burglary or fire alarm system
United States Patent 2474757
US Patent References:
/0665801.html
- - 0665801

/0942508.html
- - 0942508

Thermostatic burglar-alarm system
- - 1365693

Radio alarm system
- - 1497194

Alarm transmitting system
- - 2022991


Inventors:
Daniel, Parilla
Publication Date:
06/28/1949
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Assignee:
Sebastiano, Amico D.
Primary Class:
340/539.140
Other Classes:
340/692, 340/545.100
International Classes:
G08B19/00
US Patent References:
2234598Radio alarm system
2252710Radio alarm system
2346171Electrical protective alarm system
Foreign References:
AU1402628A