Kevin R. Koen

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Patents Grantslast 30 patents

Information Patent Grant
Stackable guide funnel system and method
- Patent number 6,766,861
- Issue date Jul 27, 2004
- ABB Vetco Gray Inc.
- Kevin R. Koen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Wear bushing running and retrieval tools
- Patent number 6,719,044
- Issue date Apr 13, 2004
- ABB Vetco Gray Inc.
- David L. Ford
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Stackable guide funnel system and method
- Publication number 20030051877
- Publication date Mar 20, 2003
- Kevin R. Koen
- E21 - EARTH DRILLING MINING
Information Patent Application
Wear bushing running and retrieval tools
- Publication number 20020092656
- Publication date Jul 18, 2002
- David L. Ford
- E21 - EARTH DRILLING MINING