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Steven A. Hein
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Sedona, AZ, US
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Patents Grants
last 30 patents
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Patent Grant
Noise reduction elements
Patent number
9,788,590
Issue date
Oct 17, 2017
Steven A. Hein
A42 - HEADWEAR
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Patent Grant
Motorsports helmet with noise reduction elements
Patent number
8,931,118
Issue date
Jan 13, 2015
Steven A. Hein
A42 - HEADWEAR
Patents Applications
last 30 patents
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Patent Application
MOTORSPORTS HELMET WITH NOISE REDUCTION ELEMENTS
Publication number
20150107936
Publication date
Apr 23, 2015
Steven A. Hein
A42 - HEADWEAR
Information
Patent Application
MOTORSPORTS HELMET WITH NOISE REDUCTION ELEMENTS
Publication number
20130133128
Publication date
May 30, 2013
Steven A. Hein
G10 - MUSICAL INSTRUMENTS ACOUSTICS