Headphone

Details Headphone Headphone

1985-01-17

1987-10-06

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

381183

Patent

active

D02922053

REFERENCES:
patent: D246259 (1977-11-01), Nishimura et al.
patent: D262019 (1981-11-01), Upshaw
patent: D270634 (1983-09-01), Ungar
patent: D272904 (1984-03-01), Kawana
High Fidelity, Jul. 1983, p. 27, Sony MDR-CD7.
High Fidelity, May 1982, p. 13, bottom left-CSE-108 Headphones.

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