Patent Assignment Abstract of Title
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Total Assignments:
2
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Patent #:
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Issue Dt:
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11/16/1999
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Application #:
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09005635
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Filing Dt:
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01/09/1998
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Inventors:
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YUSHENG YUAN, DOUGLAS W. DAVISON, KEVIN T. BERSCHEIDT
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Title:
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CHIP RESISTANT BUTTONS FOR DOWNHOLE TOOLS HAVING SLIP ELEMENTS
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Assignment:
1
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CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
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| 10200 BELLAIRE BLVD. |
| HOUSTON, TEXAS 77072 |
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| HALLIBURTON ENERGY SERVICES |
| ROBERT A. KENT |
| 2600 SOUTH 2ND STREET |
| DUNCAN, OK 73536 |
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Assignment:
2
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 4100 CLINTON DRIVE |
| HOUSTON, TEXAS 77020 |
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| HALLIBURTON ENERGY SERVICES |
| STEPEN R. CHRISTIAN |
| P.O. BOX 1431 |
| DUNCAN, OK 73536-0102 |
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