Rob A. Simmons

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Mansfield, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Bit head retaining system and method of installing a bit head in a...
- Patent number 6,938,710
- Issue date Sep 6, 2005
- Sandvik AB
- Rob A. Simmons
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Bit head retaining system and method of installing a bit head in a...
- Publication number 20040262042
- Publication date Dec 30, 2004
- Rob A. Simmons
- E21 - EARTH DRILLING MINING