Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1988-03-24
1990-02-06
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03058875
REFERENCES:
patent: 4140272 (1979-02-01), Atalla
patent: 4656346 (1987-04-01), Drexler
patent: 4663518 (1987-05-01), Borror et al.
Canon Kabushiki Kaisha
Lucas Susan J.
Selma-Nunn Freda
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