Roger J. Marsh

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Palmyra, AU

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Patents Grantslast 30 patents

Information Patent Grant
Full bore cementable gun system
- Patent number 7,686,082
- Issue date Mar 30, 2010
- Baker Hughes Incorporated
- Roger J. Marsh
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole pressure containment system
- Patent number 7,451,828
- Issue date Nov 18, 2008
- Baker Hughes Incorporated
- Roger J. Marsh
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Reservoir Pressure Monitoring
- Publication number 20120048539
- Publication date Mar 1, 2012
- BAKER HUGHES INCORPORATED
- John H. Clark
- E21 - EARTH DRILLING MINING
Information Patent Application
Full Bore Cementable Gun System
- Publication number 20090236094
- Publication date Sep 24, 2009
- Roger J. Marsh
- E21 - EARTH DRILLING MINING
Information Patent Application
Downhole pressure containment system
- Publication number 20060272810
- Publication date Dec 7, 2006
- Baker Hughs Incorporated
- Roger J. Marsh
- E21 - EARTH DRILLING MINING