Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1986-11-18
1989-08-22
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03029778
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Bergman Hans
Brown Michael
Helstab Edmond J.
Winlow Thomas A.
Hogeboom Robert C.
Lucas Susan J.
Northern Telecom Limited
Nuan Freda S.
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