Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1989-10-11
1992-01-07
Burke, Wallace R.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03229653
REFERENCES:
patent: D249346 (1978-09-01), Chou et al.
patent: D270055 (1983-08-01), Irwin et al.
patent: D287726 (1987-01-01), Itoh et al.
patent: D300323 (1989-03-01), Noda et al.
patent: 4134143 (1979-01-01), Ragle et al.
patent: 4205355 (1980-05-01), Hamanaka et al.
Silverstein Steven A.
Wang James P.
Burke Wallace R.
IBM Corporation
Kahler Mark P.
Nunn Freda S.
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