Bradley J. Head

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Oklahoma City, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Drill bit having geometrically sharp inserts
- Patent number 9,212,523
- Issue date Dec 15, 2015
- Smith International, Inc.
- Zhou Yong
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DRILL BIT HAVING GEOMETRICALLY SHARP INSERTS
- Publication number 20130140093
- Publication date Jun 6, 2013
- Smith International, Inc.
- Yong Zhou
- E21 - EARTH DRILLING MINING