Joseph L. Perkins

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Sugar Land, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Down hole method for determination of formation properties
- Patent number 4,936,139
- Issue date Jun 26, 1990
- Schlumberger Technology Corporation
- Thomas H. Zimmerman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Down hole tool for determination of formation properties
- Patent number 4,860,581
- Issue date Aug 29, 1989
- Schlumberger Technology Corporation
- Thomas H. Zimmerman
- E21 - EARTH DRILLING MINING