Headphone

Details Headphone Headphone

1984-11-14

1986-11-11

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 68

Patent

active

D02866323

REFERENCES:
patent: D237508 (1975-11-01), Lung
patent: D238184 (1975-12-01), Ohtomo
patent: D254910 (1980-05-01), Lung
patent: D255352 (1980-06-01), Besasie
patent: D266417 (1982-10-01), Perez
patent: 3104398 (1963-09-01), Palmaer

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