Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1985-03-15
1988-04-26
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D14 64, D14101
Patent
active
D02954117
REFERENCES:
patent: D239287 (1976-03-01), Ault
patent: D283711 (1986-05-01), Deura et al.
patent: 4005388 (1977-01-01), Morley et al.
patent: 4268721 (1981-05-01), Nielson et al.
patent: 4481382 (1984-11-01), Villa-Real
Cho Gihyun
Grisham Michael G.
Prontnicki David F.
American Telephone and Telegraph Company AT&T Bell Laboratories
Lucas Susan J.
Pfeifle Erwin W.
Roberts Patrick E.
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