Dennis Gonas

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Beinfait, CA

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Patents Grantslast 30 patents

Information Patent Grant
Downhole valve for fluid energized packers
- Patent number 9,644,451
- Issue date May 9, 2017
- Tam International, Inc.
- Ray Vlielander
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Downhole Valve for Fluid Energized Packers
- Publication number 20140374120
- Publication date Dec 25, 2014
- Ray Vlielander
- E21 - EARTH DRILLING MINING