Burglar alarm

Details Burglar alarm Burglar alarm

1974-09-16

1976-02-10

Olms, Douglas W.

H04M 1104

Patent

active

039378918

ABSTRACT:
An alarm system having means by which unauthorized entrance into an enclosure activates 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: 2768239 (1956-10-01), Foster et al.
patent: 3105121 (1963-09-01), Field
patent: 3327060 (1967-06-01), Hogan
patent: 3510593 (1970-05-01), Chappell
patent: 3518655 (1970-06-01), Saul
patent: 3546382 (1970-12-01), Embury

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