W. David Henderson

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Tioga, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Bi-directional fluid loss device and method
- Patent number 7,252,153
- Issue date Aug 7, 2007
- Halliburton Energy Services, Inc.
- David A. Hejl
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Bi-directional fluid loss device
- Publication number 20060169465
- Publication date Aug 3, 2006
- Halliburton Energy Services, Inc.
- David A. Hejl
- E21 - EARTH DRILLING MINING