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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06/02/1987
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Application #:
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06846784
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Filing Dt:
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04/01/1986
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Inventor:
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NIGEL D. GRIFFIN
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Title:
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MANUFACTURE OF ROTARY DRILL BITS
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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| WILIAM E. JOHNSON, JR. |
| NL INDUSTRIES, INC. |
| OFC. OF GENERAL COUNSEL |
| P. O. BOX 60087 |
| HOUSTON, TX 77205 |
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