Speaker microphone for a portable communication device

Details Speaker microphone for a portable communication device Speaker microphone for a portable communication device

1999-01-04

1999-10-26

Bondade, Nanda

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

1401

Patent

active

D04157672

REFERENCES:
patent: D307907 (1990-05-01), Siddoway et al.
patent: D346804 (1994-05-01), Tokiyama
patent: D378820 (1997-04-01), Tokiyama et al.
patent: D381024 (1997-07-01), Hinzmann et al.
patent: 2196342 (1940-04-01), Ruttenberg
patent: 4057124 (1977-11-01), Braden

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