Telephone case with easily reconfigured pushbutton keys

Details Telephone case with easily reconfigured pushbutton keys Telephone case with easily reconfigured pushbutton keys

1998-04-27

2000-11-07

Chiang, Jack

Telephonic communications

Supervisory or control line signaling

Substation originated

379428, H04M 100

Patent

active

061447323

ABSTRACT:
A telephone set comprised of a top part, a bottom part, a cover plate and a plurality of pushbutton keys. The keys fit into a plurality of oversize apertures in the top part and are held in place by the cover plate. A paper underlay is positioned over the cover plate to obscure apertures that do not contain keys. The oversize apertures in the top part allow the pushbutton keys to be removed without separating the top part from the bottom part.

REFERENCES:
patent: 3927282 (1975-12-01), Firstenberg
patent: 4160136 (1979-07-01), McGough
patent: 4280025 (1981-07-01), Carlberg
patent: 4355211 (1982-10-01), Steiner
patent: 4764770 (1988-08-01), Church
patent: 4845748 (1989-07-01), Bohannon
patent: 4930157 (1990-05-01), Citron et al.
patent: 4947569 (1990-08-01), Brooks et al.
patent: 5130629 (1992-07-01), Kuhfus
patent: 5130897 (1992-07-01), Kuzma
patent: 5172805 (1992-12-01), Gumb
Anonymous, "Changeable Array Keyboard", IBM Technical Disclosure Bulletin, vol. 11, No. 5, p. 524, XP002113233, New York, U.S., Oct. 1968.

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