Michael Barnhill

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Provo, UT, US

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Patents Grantslast 30 patents

Information Patent Grant
Attack tool for degrading materials
- Patent number 7,950,746
- Issue date May 31, 2011
- Schlumberger Technology Corporation
- David R. Hall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Wear resistant tool
- Patent number 7,469,972
- Issue date Dec 30, 2008
- David R. Hall
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
A Wear Resistant Tool
- Publication number 20070290546
- Publication date Dec 20, 2007
- David R. Hall
- E21 - EARTH DRILLING MINING
Information Patent Application
An Attack Tool for Degrading Materials
- Publication number 20070290545
- Publication date Dec 20, 2007
- David R. Hall
- E21 - EARTH DRILLING MINING