Headphone earpiece

Details Headphone earpiece Headphone earpiece

1976-06-11

1977-05-03

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D1403

Patent

active

D02442132

REFERENCES:
patent: D216802 (1970-03-01), Kliewer
patent: D218103 (1970-07-01), Kliewer
patent: D223927 (1972-06-01), Patton, Jr.
patent: D236988 (1975-09-01), Walters et al.
patent: 3454964 (1969-07-01), Brinkhoff
patent: 3875592 (1975-04-01), Aileo

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