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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07/11/2017
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Application #:
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14426884
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Filing Dt:
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03/09/2015
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Publication #:
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Pub Dt:
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02/18/2016
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PCT #:
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US2014036985
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Inventors:
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Derrick W. Lewis, Ron J. Dirksen
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Title:
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WELLBORE DRILLING USING DUAL DRILL STRING
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 3000 N. SAM HOUSTON PARKWAY E. |
| HOUSTON, TEXAS 77032 |
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| HAYNES AND BOONE, LLP |
| 2323 VICTORY AVENUE, SUITE 700 |
| IP SECTION |
| DALLAS, TX 75219 |
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