Headphone

Details Headphone Headphone

1990-05-07

1992-12-01

Ansher, Bernard

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

Patent

active

D03314081

REFERENCES:
patent: D286772 (1986-11-01), Pope
patent: D300133 (1989-03-01), Daidoh et al.
patent: D305541 (1990-01-01), Hirose
patent: D310081 (1990-08-01), Daido et al.
patent: D316861 (1991-05-01), Yoda et al.
patent: D323167 (1992-01-01), Yamazaki et al.
ID Sep./Oct. 1987 p. 79 Sony Headphones, top left.

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