George W. Tisdale

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Spring, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Hands free gooseneck with rotating cartridge assemblies
- Patent number 9,611,704
- Issue date Apr 4, 2017
- National-Oilwell Varco, L.P.
- Frank Springett
- E21 - EARTH DRILLING MINING
Information Patent Grant
Energy managing keel joint
- Patent number 7,766,580
- Issue date Aug 3, 2010
- National-Oilwell Varco, L.P.
- David William Dartford
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Shear ram assembly
- Patent number 6,719,042
- Issue date Apr 13, 2004
- Varco Shaffer, Inc.
- Christopher D. Johnson
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
HANDS FREE GOOSENECK WITH ROTATING CARTRIDGE ASSEMBLIES
- Publication number 20140083711
- Publication date Mar 27, 2014
- National-Oilwell Varco, L.P.
- Frank Springett
- E21 - EARTH DRILLING MINING
Information Patent Application
Energy managing keel joint
- Publication number 20090209352
- Publication date Aug 20, 2009
- David William Dartford
- E21 - EARTH DRILLING MINING
Information Patent Application
Shear ram assembly
- Publication number 20040003919
- Publication date Jan 8, 2004
- Christopher D. Johnson
- E21 - EARTH DRILLING MINING