J. Patrick O'Brien

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Duluth, GA, US

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Patents Grantslast 30 patents

Information Patent Grant
Concentric cylinder gas-operated automatic firearm
- Patent number 8,967,033
- Issue date Mar 3, 2015
- J. Patrick O'Brien
- F41 - WEAPONS
Information Patent Grant
Concentric cylinder gas-operated automatic firearm
- Patent number 8,752,471
- Issue date Jun 17, 2014
- J. Patrick O'Brien
- F41 - WEAPONS

Patents Applicationslast 30 patents

Information Patent Application
CONCENTRIC CYLINDER GAS-OPERATED AUTOMATIC FIREARM
- Publication number 20150369550
- Publication date Dec 24, 2015
- J. Patrick O'Brien
- F41 - WEAPONS
Information Patent Application
CONCENTRIC CYLINDER GAS-OPERATED AUTOMATIC FIREARM
- Publication number 20150082978
- Publication date Mar 26, 2015
- J. Patrick O'Brien
- F41 - WEAPONS
Information Patent Application
CONCENTRIC CYLINDER GAS AUTOMATED FIREARM
- Publication number 20120137871
- Publication date Jun 7, 2012
- J. Patrick O'BRIEN
- F41 - WEAPONS