James D. Fox

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Stafford, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Downhole pump of constant differential hydraulic pressure
- Patent number 5,290,159
- Issue date Mar 1, 1994
- Exxon Production Research Company
- Mark A. Miller
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...