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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11/04/2014
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Application #:
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13148771
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Filing Dt:
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11/11/2011
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Publication #:
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Pub Dt:
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03/01/2012
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Inventors:
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Robert B. Donnally, Chunqiao Ren, Xi Lin Liu, Yan Yu, Peng Yue, Wei Wang
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Title:
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DRILLING RIG MAST LIFT SYSTEMS AND METHODS
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 7909 PARKWOOD CIRCLE DRIVE |
| HOUSTON, TEXAS 77036 |
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| J. MIKE AMERSON |
| WILLIAMS, MORGAN & AMERSON |
| 10333 RICHMOND, SUITE 1100 |
| HOUSTON, TX 77042 |
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