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EP 0643882 A4 19950412 -

Publication

EP 0643882 A4 19950412

Application

EP 92913918 A 19920605

Priority

CA 2136948 A 19920605
US 9204566 W 19920605

Abstract (en)

[origin: CA2136948A1] 2136948 9326083 PCTABS00028 A passive selective headset (11) characterized in that a controller accepts speech noise and warning signals from microphones (14) and allows the user to employ an "in-wire" controller (17) or an adaptive speech filter (16) to attenuate the noise from the signal fed to the speakers (12) adjacent the user's ear.

IPC 1-7

H03B 29/00

IPC 8 full level

A61F 11/14 (2006.01); H04R 5/033 (2006.01)

CPC (source: EP)

A61F 11/145 (2022.01); H04R 1/1083 (2013.01); H04R 5/033 (2013.01)

Citation (search report)

No further relevant documents disclosed
See references of WO 9326083A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE

DOCDB simple family (publication)

CA 2136948 A1 19931223; EP 0643882 A1 19950322; EP 0643882 A4 19950412

DOCDB simple family (application)

CA 2136948 A 19920605; EP 92913918 A 19920605