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John M. Hetzel, Jr.
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Dayton, OH, US
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last 30 patents
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Patent Grant
Fiberglass composite firefighting helmet and method for making a fi...
Patent number
6,969,478
Issue date
Nov 29, 2005
Lion Apparel, Inc.
John M. Hetzel, Jr.
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL