Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1986-07-21
1989-07-04
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03020100
REFERENCES:
patent: D283818 (1986-05-01), Skaggs
patent: D288930 (1987-03-01), Barbera et al.
patent: D289306 (1987-04-01), Burnstein et al.
patent: 4464652 (1984-08-01), Lapson et al.
patent: 4635496 (1987-01-01), McTyre
patent: 4754268 (1988-06-01), Mori
Measurement Systems, Inc-Brochure, 10-18-84, p. 17, (Model 622-20 Digital Output Trackball--lower right corner).
Barclay Rodney
McLaughlin Charles R.
Itac Systems, Inc.
Lucas Susan J.
Nunn Freda S.
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