Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1980-08-15
1983-01-04
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D1402
Patent
active
D02674904
REFERENCES:
patent: D196917 (1963-11-01), Brueggeman
patent: D229697 (1973-12-01), Davis et al.
patent: D236357 (1975-08-01), Clayton
patent: D242926 (1977-01-01), Abrahamsen et al.
patent: 4235494 (1980-11-01), Chu et al.
LaDue James J.
Shelkofsky Clifford I.
International Business Machines Corp.
Lucas Susan J.
Robertson W. S.
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