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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10/22/2013
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Application #:
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12729828
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Filing Dt:
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03/23/2010
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Publication #:
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Pub Dt:
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09/29/2011
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Inventors:
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Jing James Yao, Paul Campbell, William H. Dell II, Dale R. Wolfer, Timothy J. Plunkett
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Title:
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FOOT VALVE ASSEMBLY FOR A DOWN HOLE DRILL
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 1600 S. GREAT SOUTHWEST PARKWAY |
| GRAND PRAIRIE, TEXAS 75051 |
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| MICHAEL BEST & FRIEDRICH LLP |
| 100 EAST WISCONSIN AVENUE |
| SUITE 3300 |
| MILWAUKEE, WI 53202-4108 |
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