Multi-functional keyboard for data processing systems

Details Multi-functional keyboard for data processing systems Multi-functional keyboard for data processing systems

1989-05-03

1991-09-03

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

Patent

active

D03196321

REFERENCES:
patent: D291997 (1987-09-01), Duffin
patent: D292289 (1987-10-01), Kawarabayashi et al.
patent: D298324 (1988-11-01), Takahashi et al.
patent: D299029 (1988-12-01), Williams
patent: D311171 (1990-10-01), Santer
patent: D311524 (1990-10-01), Lazere et al.
patent: D312625 (1990-12-01), Wetzel
patent: 4935888 (1990-06-01), Heston et al.
Moore, 1987 (Spring), p. 57, Keyboard Template.

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