Keyboard including trackball

Details Keyboard including trackball Keyboard including trackball

1985-01-14

1987-08-25

Feifer, Melvin B.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

Patent

active

D02915740

REFERENCES:
patent: D285201 (1986-08-01), Kim
Computer Design, 9/80, inside front cover, Megatek/Whizzard 7200 Keyboard.
Computer Design, Apr., 1981, p. 54, Cybernex XL-83 Keyboard.

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