Jeffrey L. Knieriemen

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Stafford, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Subsurface well safety valve with hydraulic strainer
- Patent number 4,791,991
- Issue date Dec 20, 1988
- Camco, Incorporated
- Arthur J. Morris
- E21 - EARTH DRILLING MINING
Information Patent Grant
Well packer with releasable head and method of releasing
- Patent number 4,688,641
- Issue date Aug 25, 1987
- Camco, Incorporated
- Jeffrey L. Knieriemen
- E21 - EARTH DRILLING MINING