Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1985-03-22
1987-07-07
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D02907038
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patent: D235655 (1975-07-01), Clement et al.
patent: D263710 (1982-04-01), Asano
patent: D266509 (1982-10-01), Marshall
patent: D269679 (1983-07-01), Morooka
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Business Communication Products Div./3M, Whisper Writer Ad, 1982, Teleprinter.
Computer Design, 5-1982, p. 79, Lexidata Keyboard.
Datamation, 1-1981, p. 168, Terminal Base.
NCR Worksaver Firststep Brochure, 9-1982, p. 3, Keyboard.
Day Alvin D.
Miggels Stephen G.
Nuttall Michael J.
Sylvester Gordon E.
American Telephone and Telegraph Company
AT&T Information Systems Inc.
Convergent Technologies, Inc.
Lucas Susan J.
Slusky Ronald D.
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