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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03/25/2003
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Application #:
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09428878
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Filing Dt:
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10/28/1999
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Inventors:
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ZHIGANG FANG, CHRIS CAWTHORNE, NEPHI M. MOURIK, SUJIAN HUANG
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Title:
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ROCK BIT SEAL WITH MULTIPLE DYNAMIC SEAL SURFACE ELEMENTS
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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16740 HARDY STREET |
HOUSTON, TEXAS 77032 |
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CHRISTIE, PARKER & HALE, LLP |
GRANT T. LANGTON |
P.O. BOX 7068 |
PASADENA, CA 91109-7068 |
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