John K. Rains

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Ventura, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Marine riser coupling assembly
- Patent number 4,550,936
- Issue date Nov 5, 1985
- Vetco Offshore, Inc.
- John A. Haeber
- E21 - EARTH DRILLING MINING
Information Patent Grant
Low torque pack-off seal assembly with retrievable lower section
- Patent number 4,324,422
- Issue date Apr 13, 1982
- Vetco Offshore, Inc.
- John K. Rains
- E21 - EARTH DRILLING MINING