Telephone locking device

Details Telephone locking device Telephone locking device

1979-06-14

1982-04-06

Brigance, Gerald L.

179 90D, H04M 166

Patent

active

043237398

ABSTRACT:
A telephone locking device for preventing unauthorized use of a push-button type telephone includes a shield covering at least one of the dial push-buttons to prevent unauthorized access to that push-button. The shield is held on the telephone by either a push-button gripping device or a strap, and a key is required to release the shield.

REFERENCES:
patent: 3866000 (1975-02-01), Gillis
patent: 3899647 (1975-08-01), Nachsi et al.
patent: 3965310 (1976-06-01), Willy
patent: 4005279 (1977-01-01), Richter
patent: 4081630 (1978-03-01), Washburn et al.
patent: 4131769 (1978-12-01), Davis

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