Richard Butland

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Cutting element structure for roller cone bit
- Patent number 7,152,701
- Issue date Dec 26, 2006
- Smith International, Inc.
- Richard Butland
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Cutting element arrangement for single roller cone bit
- Publication number 20050109543
- Publication date May 26, 2005
- George Witman
- E21 - EARTH DRILLING MINING
Information Patent Application
Cutting element structure for roller cone bit
- Publication number 20050077091
- Publication date Apr 14, 2005
- Richard Butland
- E21 - EARTH DRILLING MINING