Patent Assignment Abstract of Title
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Total Assignments:
2
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Patent #:
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Issue Dt:
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12/13/1983
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Application #:
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06373949
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Filing Dt:
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05/03/1982
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Inventor:
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MICHAEL E. MC MAHAN
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Title:
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DRILL PIPE TESTER AND SAFETY VALVE
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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| A CORP. OF DE |
| DUNCAN, OKLAHOMA |
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| JAMES R. DUZAN |
| HALLIBURTON SERVICE |
| P. O. DRAWER 1431 |
| DUNCAN, OK 73536 |
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Assignment:
2
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ASSIGNMENT OF ASSIGNORS INTEREST.
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| A CORP. OF DE |
| DUNCAN, OKLAHOMA |
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| JAMES R. DUZAN |
| HALLIBURTON SERVICE |
| P. O. DRAWER 1431 |
| DUNCAN, OK 73536 |
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