SOUTHWEST RESEARCH INSTITUTE
 

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"Method & Apparatus for Closing Underwater Wells"
Patent No.: 4,163,477
Inventor(s): John L. Johnson, Billy W. Vanzant
Date of Issue: 8/7/1979
Assignee: SwRI
Full Text: US Patent & Trademark Office

 Click on the inventor's name to view related technical resources:
 Billy W. Vanzant:  Former SwRI Employee, Mechanical Engineering

For further information, contact the Communications Department, Southwest Research Institute.

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Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

August 07, 2012