William Tyler Livingston

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New Iberia, LA, US

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Patents Grantslast 30 patents

Information Patent Grant
Shifting apparatus and method
- Patent number 7,617,875
- Issue date Nov 17, 2009
- Petroquip Energy Services, LLP
- William J. Darnell
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Shifting apparatus and method
- Publication number 20080257558
- Publication date Oct 23, 2008
- William J. Darnell
- E21 - EARTH DRILLING MINING