Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1987-07-15
1990-10-09
Holtje, Nelson C.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D18 4
Patent
active
D03111784
REFERENCES:
patent: D225742 (1973-01-01), Sims
patent: D286047 (1986-10-01), Roots et al.
patent: D290969 (1987-07-01), Sutou et al.
patent: D295761 (1988-05-01), Nishibori et al.
patent: D298536 (1988-11-01), Brefka
Holtje Nelson C.
International Business Machines - Corporation
Seaman Kenneth A.
Veynar Caron D.
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