Woodrow E. Renfro

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for circulating a gas bubble from a well
- Patent number 4,253,530
- Issue date Mar 3, 1981
- Dresser Industries, Inc.
- Martin J. Sharki
- E21 - EARTH DRILLING MINING
Information Patent Grant
Total gas containment system
- Patent number 4,010,012
- Issue date Mar 1, 1977
- Dresser Industries, Inc.
- Phil H. Griffin
- E21 - EARTH DRILLING MINING