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Eric Hengstenberg
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Cincinnati, IA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Firing system for a firearm
Patent number
7,076,902
Issue date
Jul 18, 2006
Knight Rifle, Inc.
Eric Hengstenberg
F41 - WEAPONS
Information
Patent Grant
Retractable face safety for a firearm
Patent number
6,996,930
Issue date
Feb 14, 2006
Knight Rifle, Inc.
Eric Hengstenberg
F41 - WEAPONS
Information
Patent Grant
Action release for a muzzleloader
Patent number
6,922,932
Issue date
Aug 2, 2005
Eric Hengstenberg
F41 - WEAPONS
Patents Applications
last 30 patents
Information
Patent Application
Combustion chamber for a muzzleloading firearm
Publication number
20050193615
Publication date
Sep 8, 2005
Eric Hengstenberg
F41 - WEAPONS
Information
Patent Application
Retractable face safety for a firearm
Publication number
20050066566
Publication date
Mar 31, 2005
Eric Hengstenberg
F41 - WEAPONS
Information
Patent Application
ACTION RELEASE FOR A MUZZLELOADER
Publication number
20050066565
Publication date
Mar 31, 2005
Eric Hengstenberg
F41 - WEAPONS
Information
Patent Application
Firing system for a firearm
Publication number
20040128899
Publication date
Jul 8, 2004
Eric Hengstenberg
F41 - WEAPONS