Earphone with microphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor

Patent

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Details

D14223, 1401

Patent

active

D03849589

REFERENCES:
patent: D353379 (1994-12-01), Nakamura et al.
patent: D357921 (1995-05-01), Ming-Chin
patent: D366486 (1996-01-01), Runquist et al.
patent: D369349 (1996-04-01), Hayashi
patent: 4720857 (1988-01-01), Burris et al.
patent: 5446788 (1995-08-01), Lucey et al.

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