Clip-on earphone

Details Clip-on earphone Clip-on earphone

1993-08-05

1994-09-20

Bullock, B. J.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

Patent

active

D03507572

REFERENCES:
patent: D180695 (1957-07-01), Norris
patent: D189793 (1961-02-01), Howard
patent: D300133 (1989-03-01), Daidoh
patent: D305541 (1990-01-01), Hirose
patent: D311007 (1990-10-01), Daido
patent: D337118 (1993-07-01), Seikita
patent: 3828577 (1974-08-01), Haynes
patent: 4020297 (1977-04-01), Brodie
patent: 4791673 (1988-12-01), Schreiber
patent: 4972492 (1990-11-01), Tanaka et al.
patent: 5048092 (1991-09-01), Yamagishi et al.

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