Patent Assignment Abstract of Title
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Total Assignments:
4
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Patent #:
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Issue Dt:
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12/24/1996
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Application #:
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08233501
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Filing Dt:
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04/26/1994
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Inventor:
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WILLIAM M. DUNCAN JR.
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Title:
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DRILLING FLUID AND DRILLING FLUID ADDITIVE
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Assignment:
1
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SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).
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| 1000 LOUISIANA STREET |
| HOUSTON, TEXAS 77002 |
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| MAYER, BROWN & PLATT |
| ROBERT E. RUDE II |
| 1909 K STREET, N.W. |
| WASHINGTON, DC 20006 |
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Assignment:
2
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| 1000 LOUISIANA, 3RD FLOOR |
| HOUSTON, TEXAS 77002 |
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| SANFORD E. WARREN, JR. |
| P.O. BOX 50784 |
| DALLAS, TX 75201 |
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Assignment:
3
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RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS).
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| 2710 EAST CORRAL |
| KINGSVILLE, TEXAS 78363 |
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| SMITH INTERNATIONAL, INC. |
| 16740 HARDY ST. |
| PATENT SERVICES |
| HOUSTON, TX 77032 |
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Assignment:
4
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RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS).
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| 2710 EAST CORRAL |
| KINGSVILLE, TEXAS 78363 |
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| SMITH INTERNATIONAL, INC. |
| 16740 HARDY ST. |
| PATENT SERVICES |
| HOUSTON, TX 77032 |
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