John T. Lembcke

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Downhole tools with inflatable packers and method of operating the...
- Patent number 5,267,617
- Issue date Dec 7, 1993
- Petro-Tech Incorporated
- James M. Perricone
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tubing end locator
- Patent number 5,092,402
- Issue date Mar 3, 1992
- Petro-Tech Tools Incorporated
- James M. Perricone
- E21 - EARTH DRILLING MINING