US Patent 9474317 Dual shell helmet for minimizing rotational acceleration
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Patent abstract
The present invention relates to personal safety equipment for use by athletes, military personnel, motor sports participants and the like and in particular, protective headgear adapted to minimize rotational acceleration and/or axial compressive forces incident on the head of a wearer.
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Patent Inventor Names
Bret Berry0
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US Patent 09474317 Dual shell helmet for minimizing rotational acceleration US Patent 9474317 Dual shell helmet for minimizing rotational acceleration
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Patent Number
09474317
Patent Number
9474317
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US Patent 09474317 Dual shell helmet for minimizing rotational acceleration
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Is a
Patent jurisdiction
Patent number
09474317
Date of patent
October 25, 2016
Patent application number
14286993
Date Filed
May 24, 2014
Patent primary examiner
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