Earphone

Details Earphone Earphone

1994-06-07

1995-04-18

Wallace, Terry A.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

Patent

active

D03574792

REFERENCES:
patent: D272904 (1984-03-01), Kawano
patent: D326654 (1992-06-01), Brown
patent: D350961 (1994-09-01), Nakamura
patent: 4864611 (1989-09-01), Helmuth

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