Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1989-11-02
1991-10-08
Burke, Wallace R.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03205983
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T. F. Cummings, "Variable Keyboard for Terminal Displays", IBM Technical Disclosure Bulletin, vol. 16, No. 2, Jul. 1973.
Auerbach Marc
Emmons Lawrence D.
Patton Douglas M.
Burke Wallace R.
Mitsubishi Electric Sales America, Inc.
Nunn Freda S.
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