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Kenji Homma
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Blacksburg, VA, US
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last 30 patents
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Patent Grant
Sound-attenuating earmuff having isolated double-shell structure
Patent number
7,854,294
Issue date
Dec 21, 2010
Adaptive Technologies, Inc.
Yu Du
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Grant
Sound-attenuating earmuff having isolated double-shell structure
Patent number
7,703,572
Issue date
Apr 27, 2010
Adaptive Technologies, Inc.
Yu Du
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
SOUND-ATTENUATING EARMUFF HAVING ISOLATED DOUBLE-SHELL STRUCTURE
Publication number
20100218775
Publication date
Sep 2, 2010
Yu Du
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
SOUND-ATTENUATING EARMUFF HAVING ISOLATED DOUBLE-SHELL STRUCTURE
Publication number
20080128198
Publication date
Jun 5, 2008
Yu Du
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE