Headphone

Details Headphone Headphone

1995-08-29

1996-12-31

Morris, Sandra L.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

Patent

active

D03770214

REFERENCES:
patent: D328074 (1992-07-01), Yamazaki et al.
patent: D331059 (1992-11-01), Sogabe et al.
patent: 3661225 (1972-05-01), Anderson
patent: 5018599 (1991-05-01), Dohi et al.
patent: 5459290 (1995-10-01), Yamagishi

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