Edward Wayne Welch JR.

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Broken Arrow, OK, US

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Patents Applicationslast 30 patents

Information Patent Application
Control line hydrostatic minimally sensitive control system
- Publication number 20080128137
- Publication date Jun 5, 2008
- David Z. Anderson
- E21 - EARTH DRILLING MINING
Information Patent Application
Downhole hydraulic control system with failsafe features
- Publication number 20080066921
- Publication date Mar 20, 2008
- Darren E. Bane
- E21 - EARTH DRILLING MINING
Information Patent Application
High Pressure and Temperature Seal for Downhole Use
- Publication number 20080029264
- Publication date Feb 7, 2008
- BAKER HUGHES INCORPORATED
- Ronald D. Williams
- E21 - EARTH DRILLING MINING
Information Patent Application
High pressure and temperature seal for downhole use
- Publication number 20030222410
- Publication date Dec 4, 2003
- Ronald D. Williams
- E21 - EARTH DRILLING MINING