Telephone

Details Telephone Telephone

1979-05-07

1981-07-28

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D21 75, D21111, D1403

Patent

active

D02600161

REFERENCES:
patent: D69644 (1926-03-01), Dyer
patent: D247175 (1978-02-01), Oliney
patent: D248556 (1978-07-01), Thomas
patent: D250023 (1978-10-01), Perkins
patent: 4087650 (1978-05-01), Tucker

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