Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1989-07-28
1991-12-31
Burke, Wallace R.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D19 52
Patent
active
D03227774
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patent: 4918632 (1990-04-01), York
Computer Products, Jul. 1988, Front Cover Scriptel Pen Writer.
Burke Wallace R.
Canon Kabushiki Kaisha
Nunn Freda S.
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