Data terminal/acoustic coupler

Details Data terminal/acoustic coupler Data terminal/acoustic coupler

1979-02-22

1981-11-10

Ansher, Bernard

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D14 4, D14 11, D14 52, D14 53, D14 64, D1402, D1403

Patent

active

D02617617

REFERENCES:
patent: D233446 (1974-10-01), MacConkey
patent: D238079 (1975-12-01), Heribertson
patent: D245500 (1977-08-01), Fukushima et al.
patent: 3659050 (1972-04-01), Carlsson et al.
patent: 4097691 (1978-06-01), Ehrlich et al.
patent: 4115659 (1978-09-01), Spanel et al.

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