Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1982-10-01
1985-01-22
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D02772841
REFERENCES:
patent: D244863 (1977-06-01), Smith et al.
Computer Design, 7-1981, p. 95, Sanders Asso. Keyboard.
Tektronix 4020 Series Brochure .COPYRGT.1979, front cover, Keyboard.
High Technology Solutions, Inc.
Lucas Susan J.
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