David W. Hughes

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Hilltop Lakes, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
High capacity wellhead connector having a single annular piston
- Patent number 8,474,537
- Issue date Jul 2, 2013
- Vetco Gray Inc.
- Robert K. Voss
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
High Capacity Wellhead Connector Having a Single Annular Piston
- Publication number 20100006298
- Publication date Jan 14, 2010
- Vetco Gray Inc.
- Robert K. Voss
- E21 - EARTH DRILLING MINING
Information Patent Application
HIGH CAPACITY WELLHEAD CONNECTOR HAVING A SINGLE ANNULAR PISTON
- Publication number 20090014184
- Publication date Jan 15, 2009
- Robert K. Voss
- E21 - EARTH DRILLING MINING