Darrel P. Davis

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Longview, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Sealing by ball sealers
- Patent number 8,936,085
- Issue date Jan 20, 2015
- Schlumberger Technology Corporation
- Curtis L. Boney
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Sealing By Ball Sealers
- Publication number 20090255674
- Publication date Oct 15, 2009
- Curtis L. Boney
- E21 - EARTH DRILLING MINING