Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1984-11-29
1987-08-11
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D18 13
Patent
active
D02913135
REFERENCES:
patent: D214761 (1969-07-01), Jones et al.
patent: D260517 (1981-09-01), Hardy
patent: D283321 (1986-04-01), Bixler et al.
Clark Jeffery W.
Quedenfeld Jeffery L.
Topencik Paul A.
Gasper John S.
International Business Machines - Corporation
Lucas Susan J.
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