Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1985-11-04
1988-09-27
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D02978431
REFERENCES:
patent: D265906 (1982-08-01), Steinbugler
patent: D291443 (1987-08-01), Pedinielli et al.
patent: 4468718 (1984-08-01), Main
patent: 4532513 (1985-07-01), Halvorson
Pedinielli Gilbert
Richelet Daniel
Frisone John B.
International Business Machines Corp.
Lucas Susan J.
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