Norval R. Dove

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Drilling string back off sub apparatus and method for making and us...
- Patent number 8,297,365
- Issue date Oct 30, 2012
- Vortexx Research, Ltd
- Norval Roland Dove
- E21 - EARTH DRILLING MINING
Information Patent Grant
Vortex method
- Patent number 5,653,298
- Issue date Aug 5, 1997
- Vortexx Group, Inc.
- Norval Roland Dove
- E21 - EARTH DRILLING MINING
Information Patent Grant
Vortex drill bit
- Patent number 5,632,349
- Issue date May 27, 1997
- Norval R. Dove
- E21 - EARTH DRILLING MINING
Information Patent Grant
Negative pressure vortex nozzle
- Patent number 5,494,124
- Issue date Feb 27, 1996
- Vortexx Group, Inc.
- Norval R. Dove
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
NOZZLE WITH CHANNELS THAT IMPART AN ANGULAR MOMENTUM TO THE EXITING...
- Publication number 20100288562
- Publication date Nov 18, 2010
- VORTEXX GROUP, INC.
- Norval Roland Dove
- E21 - EARTH DRILLING MINING
Information Patent Application
Drilling String Back off Sub Apparatus and Method for Making and Us...
- Publication number 20090283322
- Publication date Nov 19, 2009
- Norval R. Dove
- E21 - EARTH DRILLING MINING