Merchandise case with door lock alarm

Details Merchandise case with door lock alarm Merchandise case with door lock alarm

1978-02-13

1979-10-23

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

70271, 200 6167, 200 6193, 340542, 340666, G08B 1308

Patent

active

041722540

ABSTRACT:
A jewelry show case or similar merchandise container is equipped with a door lock and alarm system which is effective to either automatically lock the access doors of the show case in fully closed positions, or signal an open condition of the doors when an authorized attendant leaves his usual station behind the show case.

REFERENCES:
patent: 1658848 (1928-02-01), Kalikow
patent: 2756300 (1956-07-01), Thiberville
patent: 3344629 (1967-10-01), Burney
patent: 3686660 (1972-08-01), Massover et al.
patent: 3784776 (1974-01-01), Asanuma
patent: 3892933 (1975-07-01), Rocchitelli

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