Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1983-05-12
1986-01-28
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D02823667
REFERENCES:
patent: D210589 (1968-03-01), Kalvitis et al.
patent: D233345 (1974-10-01), Kneale et al.
patent: D256232 (1980-08-01), Natoli et al.
patent: D258431 (1981-03-01), Natoli et al.
Anglin J. Michael
International Business Machines - Corporation
Lucas Susan J.
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