Keyboard for inputting plural letters or symbols

Details Keyboard for inputting plural letters or symbols Keyboard for inputting plural letters or symbols

1981-06-09

1984-04-03

Tolin, G. P.

Electricity: circuit makers and breakers

Electric switch details

Indicators

200 56R, 200159B, 200 5A, 340712, 235145R, H01H 312

Patent

active

044410018

ABSTRACT:
A keyboard for inputting plural letters or symbols includes a number of switches, each of which has its associated letter or symbol displayed in a transparent window adjacent thereto. The keyboard is arranged such that a display card located beneath the transparent windows may be replaced so as to easily change the letters or symbols which are visible through the transparent windows.

REFERENCES:
patent: 3917915 (1975-11-01), Murata
patent: 3932722 (1976-01-01), Obata
patent: 3969600 (1976-07-01), Sims, Jr.
patent: 4160886 (1979-07-01), Wright
patent: 4311996 (1982-01-01), Nakamura

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