Gary L. Zumwalt

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Dallas, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Borehole logging method for determining the damping of acoustic tub...
- Patent number 4,715,019
- Issue date Dec 22, 1987
- Mobil Oil Corporation
- William L. Medlin
- G01 - MEASURING TESTING
Information Patent Grant
Method for recovery of oil by means of a gas drive combined with lo...
- Patent number 4,417,621
- Issue date Nov 29, 1983
- William L. Medlin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sand control method employing special hydraulic fracturing technique
- Patent number 4,378,845
- Issue date Apr 5, 1983
- Mobil Oil Corporation
- William L. Medlin
- E21 - EARTH DRILLING MINING