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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for attaching/detaching drill rod
- Patent number 6,845,825
- Issue date Jan 25, 2005
- Vermeer Manufacturing Company
- Brian J. Bischel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Gripping mechanism for a directional drilling machine
- Patent number 6,408,954
- Issue date Jun 25, 2002
- Vermeer Manufacturing Company
- Trail Price
- E21 - EARTH DRILLING MINING
Information Patent Grant
Blocking system for a directional drilling machine
- Patent number 6,360,830
- Issue date Mar 26, 2002
- Vermeer Manufacturing Company
- Trail Price
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for attaching/detaching drill rod
- Publication number 20020157870
- Publication date Oct 31, 2002
- Brian J. Bischel
- E21 - EARTH DRILLING MINING