John M. Lee

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Weatherford, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Dart valve assembly for a bypass plunger
- Patent number 9,677,389
- Issue date Jun 13, 2017
- Flowco Production Solutions, LLC
- Garrett S. Boyd
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Dart Valve Assembly for a Bypass Plunger
- Publication number 20170058652
- Publication date Mar 2, 2017
- Flowco Production Solutions, LLC
- Garrett S. Boyd
- E21 - EARTH DRILLING MINING