Gregson William Martin Spring

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Pershore, Worcestershire WR10 1QS, GB

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Patents Grantslast 30 patents

Information Patent Grant
Communication system for down hole use
- Patent number 7,378,985
- Issue date May 27, 2008
- Gregson William Martin Spring
- G01 - MEASURING TESTING
Information Patent Grant
Downhole torque-generating and generator combination apparatus
- Patent number 7,141,901
- Issue date Nov 28, 2006
- Gregson William Martin Spring
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Downhole torque generator
- Patent number 7,057,316
- Issue date Jun 6, 2006
- Gregson William Martin Spring
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...