Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Dictating or transcribing
Patent
1991-05-29
1993-09-14
Pfeffer, Terry A.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Dictating or transcribing
Patent
active
D03393445
REFERENCES:
patent: D224712 (1972-09-01), van de Poel
patent: D297730 (1988-09-01), Levow
patent: D297934 (1988-10-01), Culbertson
Haken Jack E.
Pfeffer Terry A.
U.S. Philips Corporation
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