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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07/12/1988
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Application #:
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06880583
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Filing Dt:
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06/30/1986
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Inventor:
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MARTIN J. FENNELL
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Title:
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METHOD AND APPARATUS FOR COMPENSATING FOR DRILLING LINE STRETCH IN DETERMINING EQUIPMENT DEPTH IN A WELL AND FOR MEASUREMENT OF HOOKLOAD ON THE TRAVELING BLOCK OF A DRILLING RIG
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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| 1770 TRIBUTE ROAD, P.O. BOX 214676 |
| SACRAMENTO, CALIFORNIA 95821 |
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| CHRISTIE, PARKER & HALE |
| P. O. BOX 7068 |
| PASADENA, CA 91109-7068 |
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