Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1987-02-26
1990-02-20
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03061574
REFERENCES:
patent: D273240 (1985-04-01), Murray
patent: D288447 (1987-02-01), Otsuka
patent: 2686099 (1954-08-01), Bomberger et al.
patent: 2703468 (1955-03-01), Sheinwald
patent: 4419672 (1983-12-01), Hird
patent: 4779348 (1988-10-01), Levy
Hewlett Packard-Aug. 1985 Drafting Plotters-Cover.
Versatec-Jan. 1986-Printer/Plotter-Cover.
Davis Barton D.
Leong David W.
Tverdoch Richard N.
Bethurum William J.
Hewlett--Packard Company
Lucas Susan J.
Nunn Freda S.
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