Headphone

Details Headphone Headphone

1985-07-23

1989-03-07

Ansher, Bernard

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

Patent

active

D03001334

REFERENCES:
patent: D270634 (1983-09-01), Ungar
patent: D286772 (1986-11-01), Pope
patent: 4597469 (1986-07-01), Nagashima
Fordham 1982 Catalog, p. 187, top right-Headphone Model SH-89A.
Stereo Review, Jul. 1984, p. 8, center bottom.
W. Bell & Co. 1985 Catalog, p. 323, Item 6-Sony MDR-20T.

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