Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1987-07-23
1990-04-24
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03074200
REFERENCES:
patent: D267490 (1983-01-01), La Due et al.
patent: D273866 (1984-05-01), La Due et al.
patent: D278712 (1985-05-01), Adachi et al.
Adachi Koushiro
Miyamoto Mitsuo
Shibuya Shinji
Tsukaguchi Tamotsu
Hitachi , Ltd.
Lucas Susan J.
Nunn Freda S.
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