Dirk D. Ringgenberg

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Madrid, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for prevention of dropping of handgun
- Patent number 9,651,336
- Issue date May 16, 2017
- Dirk D. Ringgenberg
- F41 - WEAPONS

Patents Applicationslast 30 patents

Information Patent Application
Apparatus for Prevention of Dropping of Handgun
- Publication number 20150168098
- Publication date Jun 18, 2015
- Dirk D. Ringgenberg
- F41 - WEAPONS
Information Patent Application
Apparatus for Prevention of Dropping of Handgun
- Publication number 20140259539
- Publication date Sep 18, 2014
- Dirk D. Ringgenberg
- F41 - WEAPONS