Headphone

Details Headphone Headphone

1991-07-09

1993-07-20

Ansher, Bernard

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

Patent

active

D03375870

REFERENCES:
patent: D269611 (1983-07-01), Saito
patent: D316551 (1991-04-01), Ichikawa
patent: D318669 (1991-07-01), Nakayama
patent: 4668842 (1987-05-01), Yokoyama et al.
W. Bell Co. 1990-1991 Catalog .COPYRGT.1990 p. 200 Sony headphones MDR-WO5L, item 7.
Radio Shack 1988 Catalog.sup.p Realistic Nova-37.
W. Bell & Co. 1987-1988 Catalog p. 203 Sony Sports Walkman Headset, item 7.
Evans 1988 Catalog p. 278 Sony Lightweight vertical in-ear headphones, item 9.

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