Joshua T. Smith

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Spring, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Annular pressure release sub
- Patent number 9,181,777
- Issue date Nov 10, 2015
- Weatherford Technology Holdings, LLC
- John Emile Hebert
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
ANNULAR PRESSURE RELEASE SUB
- Publication number 20120273226
- Publication date Nov 1, 2012
- John Emile Hebert
- E21 - EARTH DRILLING MINING