Truman Randall Davis

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Abilene, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Circulating sub with mudsaver for dispensing and circulating fluid...
- Patent number 7,987,915
- Issue date Aug 2, 2011
- Express Energy Services Operating, LP
- Richard Jay Wiggins
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Circulating sub tool for dispensing and circulating fluid in a well...
- Patent number 7,938,177
- Issue date May 10, 2011
- Express Energy Services Operating, LP
- Richard Jay Wiggins
- E21 - EARTH DRILLING MINING