Lapel microphone

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment

Patent

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1401

Patent

active

D03837580

REFERENCES:
patent: D183114 (1958-07-01), Burroughs
patent: D190865 (1961-07-01), Levy et al.
patent: D199398 (1964-10-01), Freeman
patent: D250137 (1978-10-01), Dorfman
patent: 3414686 (1968-12-01), Reinthaler
patent: 4741041 (1988-04-01), Hayashi
patent: 4815143 (1989-03-01), Derhaag et al.

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