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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10/02/1984
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Application #:
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06278166
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Filing Dt:
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06/29/1981
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Inventor:
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JAMES M. UPCHURCH
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Title:
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ANNULUS PRESSURE CONTROLLED REVERSING VALVE
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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| 277 PARK AVE. |
| A CORP. OF TX |
| NEW YORK, NEW YORK 10172 |
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| BRUCE D. RITER |
| SCHLUMBERGER LTD. |
| 205 INDUSTRIAL ROAD |
| SUGAR LAND, TX 77478 |
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