Combination telephone instrument

Details Combination telephone instrument Combination telephone instrument

1978-01-25

1980-09-16

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 58, D10 2, D1403

Patent

active

D02569175

REFERENCES:
patent: D229423 (1973-11-01), Pessner
patent: D243619 (1977-03-01), Torbjorn
patent: D244469 (1977-05-01), Buchin
patent: D251844 (1979-05-01), Kramer
patent: 2487013 (1949-11-01), Zibelman
patent: 3911446 (1975-10-01), Albertini
patent: 3982072 (1976-09-01), Dean

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