Keyboard for use by disabled persons

Details Keyboard for use by disabled persons Keyboard for use by disabled persons

1994-12-16

1996-07-30

Word, A. Hugo

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D19 60

Patent

active

D03722333

REFERENCES:
patent: D263590 (1982-03-01), Fukushima et al.
patent: D263827 (1982-04-01), Pemberton
patent: D316557 (1991-04-01), Ido
patent: D321208 (1991-10-01), Bergstresser, Sr. et al.
patent: D334945 (1993-04-01), Hill
patent: D354742 (1995-01-01), Hamilton
patent: 4142236 (1979-02-01), Martz et al.
patent: 4381614 (1983-05-01), Kebe
patent: 4630934 (1986-12-01), Arber

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