Patent Assignment Abstract of Title
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Total Assignments:
1
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Patent #:
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Issue Dt:
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10/22/1991
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Application #:
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07574982
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Filing Dt:
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08/29/1990
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Inventor:
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RONALD E. PRINGLE
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Title:
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EQUALIZING MEANS FOR A SUBSURFACE WELL SAFETY VALVE
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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| PATENT DEPARTMENT |
| FULBRIGHT & JAWORSKI |
| 1301 MCKINNEY STREET |
| HOUSTON, TX 77010 |
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