Joseph B. Crump

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Duncan, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Multi-pressure compensation of variable displacement pump
- Patent number 5,133,644
- Issue date Jul 28, 1992
- Halliburton Company
- Stephen W. Barr
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Protective cover assembly with reverse buckling disc
- Patent number 4,771,801
- Issue date Sep 20, 1988
- Halliburton Services
- Joseph B. Crump
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...