Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1989-02-27
1991-06-18
Burke, Wallace R.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03175952
REFERENCES:
patent: D270639 (1983-09-01), Goodin et al.
patent: D308668 (1990-06-01), Briscoe et al.
patent: 4244659 (1981-01-01), Malt
patent: 4483634 (1984-11-01), Frey et al.
patent: 4579470 (1986-01-01), Casey
patent: 4597681 (1986-07-01), Hodges
Electronic Design, Jun. 19, 1986, p. 82, The IBM-Enhanced Personal Computer Keyboard (No. 1), Computer Box Group 290.
Burke Wallace R.
Casio Computer Co. Ltd.
Nunn Freda S.
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