Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1996-02-26
1997-08-12
Nunn, Freda
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
1402
Patent
active
D03822575
REFERENCES:
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patent: 4974103 (1990-11-01), Iftikar et al.
patent: 5053903 (1991-10-01), Harney et al.
patent: 5175657 (1992-12-01), Iftikar et al.
patent: 5235481 (1993-08-01), Kamo et al.
patent: 5282099 (1994-01-01), Kawagoe et al.
International Business Machines - Corporation
Nunn Freda
Shifrin D. A.
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