Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1979-01-10
1981-09-22
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D1402
Patent
active
D02608839
REFERENCES:
patent: 3226712 (1965-12-01), Lens et al.
IBM Technical Disclosure Bulletin, vol. 13, No. 7, 12-70, p. 204, Keyboard with Changeable Coding & Key Designation.
IBM Technical Disclosure Bulletin, vol. 16, No. 2, 7-73, p. 575, Variable Keyboard for Terminal Displays.
DaRin Edward J.
Lucas Susan J.
MSI Data Corporation
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