Thomas G. Hill, Jr.

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Kingwood, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for locking out a subsurface safety valve
- Patent number 6,991,040
- Issue date Jan 31, 2006
- Weatherford/Lamb, Inc.
- Thomas G. Hill, Jr.
- E21 - EARTH DRILLING MINING
Information Patent Grant
Curved flapper with angle variant seat for a subsurface safety valve
- Patent number 6,851,477
- Issue date Feb 8, 2005
- Weatherford/Lamb, Inc.
- Thomas G. Hill, Jr.
- E21 - EARTH DRILLING MINING