Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1982-11-19
1985-09-10
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D02805138
REFERENCES:
patent: D210461 (1968-03-01), Kneale
patent: D236547 (1975-08-01), Clayton et al.
patent: D258431 (1981-03-01), Natoli et al.
Fischer Wolfgang
Hilpert Fritz
Coffman E. Ronald
International Business Machines - Corporation
Lucas Susan J.
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