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Communications
Class Information
Number:
181/133
Name:
Acoustics
>
Anatomic or prosthetic relation
>
Ear and mouth
>
Auditory canal insert
> Deflector type
Description:
Subject matter wherein there is a device to deflect sound waves into the auditory canal.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
7249651
Swiveling sound-gathering ear guard for masks and helmets
Jul. 31, 2007
6954971
Method for simultaneously making a plurality of acoustic signal sensor elements
Oct. 18, 2005
6325173
Ear wind shield
Dec. 4, 2001
6237714
Article for collecting sound for ears
May. 29, 2001
6082486
Article for collecting sound for ears
Jul. 4, 2000
5965850
Non-electronic hearing aid
Oct. 12, 1999
5189265
Cap with hearing enhancing structure
Feb. 23, 1993
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