Computer keypad

Details Computer keypad Computer keypad

1990-02-14

1992-07-14

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D14100, D18 7

Patent

active

D03278816

REFERENCES:
patent: D237195 (1975-10-01), Kitai
patent: D258062 (1981-01-01), Cusimano et al.
patent: D283895 (1986-05-01), Grimes
patent: D286047 (1986-10-01), Roots et al.
patent: D308855 (1990-06-01), Schaum
patent: D315896 (1991-04-01), Brown

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