Desk telephone station with built-in freespeaking device and an

Details Desk telephone station with built-in freespeaking device and an Desk telephone station with built-in freespeaking device and an

1976-04-19

1977-05-24

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D1403

Patent

active

D02444682

REFERENCES:
patent: D187592 (1960-04-01), Lehman
patent: D225745 (1973-01-01), Haahein et al.
patent: D229192 (1973-11-01), Nakamura
patent: D229193 (1973-11-01), Kamakura
patent: 2653192 (1953-09-01), Shipton

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