Headphone

Details Headphone Headphone

Filed on

1992-11-18

Date issued

1994-10-18

Examiner

Bullock, B. J.

Patent Class

Recording, communication, or information retrieval equipment

SubClass

Video or audio transmission, recording or playback equipment

SubSubClass

Speaker or housing therefor

Type

Patent

Status

active

Patent number

D03515974

Description

REFERENCES:
patent: D269611 (1983-07-01), Saito
patent: D316551 (1991-04-01), Ichikawa
patent: D318669 (1991-07-01), Nakayama
patent: D331057 (1992-11-01), Isonaga
patent: D331408 (1992-12-01), Ellermeier
patent: D337118 (1993-07-01), Seikita
patent: D337587 (1993-07-01), Nakayama
ID Magazine, Sep. 10, 1987 p. 79 Sony MDR-A60 headphone.
Evans Catalog, .COPYRGT.1988 p. 278 Sony Lightweight Headphones #9.
HFD, Jun. 26, 1989 p. 91 Sony MDR-AZIL folding headphones.

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