Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1990-12-04
1993-09-14
Burke, Wallace R.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03393305
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Jasinski Joseph E.
Pollitt Richard F.
Sapper Richard F.
Burke Wallace R.
International Business Machines Corp.
McConnell Daniel E.
Nunn Freda S.
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