Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1983-03-21
1986-06-03
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D02840847
REFERENCES:
patent: D211473 (1968-06-01), Dykmans et al.
patent: 1011853 (1911-12-01), Rockwell
patent: 3251572 (1966-05-01), Klitzner
patent: 3876831 (1975-04-01), Wickham et al.
patent: 3980266 (1976-09-01), Jones
Chromatic.TM. Computer Company Catalog .COPYRGT.1979, p. 4, X-Y Digitizer Tablet.
Computer Design, 8-1981, p. 56, LexiData System Digitizer.
Industrial Design, 5/6-1978, p. 25, Editing Terminal Keyboard.
Lucas Susan J.
Rosen Daniel M.
Summagraphics Corporation
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