Telephone data modem

Details Telephone data modem Telephone data modem

1988-11-10

1990-07-17

Lucas, Susan J.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D14241

Patent

active

D03092984

REFERENCES:
patent: D262106 (1981-12-01), Frassanito
patent: D269345 (1983-06-01), Payne, Jr. et al.
patent: D300428 (1989-03-01), Garmon
patent: D302268 (1989-07-01), Larson et al.
patent: D303252 (1989-09-01), Shih
patent: 4065640 (1977-12-01), Rouiller

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