Burglar alarm improvements

Details Burglar alarm improvements Burglar alarm improvements

1975-12-08

1977-05-31

Olms, Douglas W.

179 1HS, H04M 1104

Patent

active

040271030

ABSTRACT:
An alarm system having means by which unauthorized entrance into an enclosure activates electro-mechanical apparatus which dials a second telephone from a first telephone, thereby informing whomever might be present at the second telephone that a particular location is being burglarized.

REFERENCES:
patent: 2597670 (1952-05-01), Pinto
patent: 2878315 (1959-03-01), Agule
patent: 3296382 (1967-01-01), Klumb et al.
patent: 3384720 (1968-05-01), Beatty
patent: 3510593 (1970-05-01), Chappell
patent: 3518655 (1970-06-01), Saul
patent: 3546382 (1970-12-01), Embury

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