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Helmet retention system
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Patent number 10,595,578
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Issue date Mar 24, 2020
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Intellectual Property Holdings, LLC
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Ron Szalkowski
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A42 - HEADWEAR
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Helmet retention system
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Patent number 9,894,953
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Issue date Feb 20, 2018
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Intellectual Property Holdings, LLC
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Ron Szalkowski
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A42 - HEADWEAR
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Helmet retention system
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Patent number 9,743,701
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Issue date Aug 29, 2017
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Intellectual Property Holdings, LLC
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Bryan Stephen Javorek
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A42 - HEADWEAR
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Helmet
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Patent number D793625
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Issue date Aug 1, 2017
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Intellectual Property Holdings, LLC
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Jon A. Hauserman
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D29 - Equipment for safety, protection, and rescue
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Helmet impact liner system
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Patent number 9,516,910
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Issue date Dec 13, 2016
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Intellectual Property Holdings, LLC
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Ron Szalkowski
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A42 - HEADWEAR
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Helmet impact liner system
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Patent number 9,320,311
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Issue date Apr 26, 2016
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Intellectual Property Holdings, LLC
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Ron Szalkowski
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A42 - HEADWEAR
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Helmet
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Patent number D733972
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Issue date Jul 7, 2015
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Intellectual Property Holdings, LLC
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Ron Szalkowski
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D29 - Equipment for safety, protection, and rescue
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Energy management structure
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Patent number 8,726,424
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Issue date May 20, 2014
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Intellectual Property Holdings, LLC
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Shawn Thomas
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A42 - HEADWEAR
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Helmet liner
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Patent number D683079
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Issue date May 21, 2013
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Intellectual Property Holdings, LLC
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Joshua Schmidt
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D29 - Equipment for safety, protection, and rescue
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Helmet liner
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Patent number D679058
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Issue date Mar 26, 2013
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Intellectual Property Holdings, LLC
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Ron Szalkowski
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D29 - Equipment for safety, protection, and rescue