David L. Whatley

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Wichita Falls, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Oil well pumping apparatus
- Patent number 4,530,645
- Issue date Jul 23, 1985
- Hydraunit Venture
- David L. Whatley
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...