Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1987-09-29
1990-09-18
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03106632
REFERENCES:
patent: D294706 (1988-03-01), Duffin, II
patent: 4075465 (1978-02-01), Funk et al.
patent: 4078257 (1978-03-01), Bagley
patent: 4274081 (1981-06-01), Nomura et al.
patent: 4451895 (1984-05-01), Sliwkowski
patent: 4567480 (1986-01-01), Blachard
patent: 4631700 (1986-12-01), Lapeyre
IBM Technical Disclosure Bulletin-12/1970, p. 2041 (Keyboard with Changeable Encoding).
MISCO-Personal Computer Accessories, (1985), p. 25 (Keyboard Template).
Lucas Susan J.
Nunn Freda S.
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