Keyboard including trackball

Details Keyboard including trackball Keyboard including trackball

1984-03-05

1986-08-19

Lucas, Susan J.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

Patent

active

D02852012

REFERENCES:
patent: D276914 (1984-12-01), Moriconi
patent: D278709 (1985-05-01), Xanthopoulos
Computer Design, 9-1980, inside front cover, Megatek/Whizzard 7200 Keyboard.
Computer Design, 1-1982, p. 59, Grinne II Systems, Control with Trackball.

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