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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12/25/2001
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Application #:
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09286650
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Filing Dt:
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04/06/1999
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Inventor:
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JOSEPH A. ZIEROLF
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Title:
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METHOD AND APPARATUS FOR DETERMINING POSITION IN A PIPE
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 103 ANGELLE CIRCLE |
| HOUMA, LOUISIANA 70360 |
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| LITMAN LAW OFFICES, LTD. |
| JOHN R. WENZEL |
| P.O. BOX 15035 |
| CRYSTAL CITY STATION |
| ARLINGTON, VA 22215 |
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Assignment:
2
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 5555 SAN FELIPE ROAD |
| HOUSTON, TEXAS 77056-2725 |
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| JACK E. EBEL |
| 165 SOUTH UNION BOULEVARD |
| SUITE 902 |
| LAKEWOOD, CO 80228 |
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Assignment:
3
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 539 S. MAIN STREET |
| FINDLAY, OHIO 45840 |
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| MARATHON OIL COMPANY |
| JACK E. EBEL |
| PATENT DEPARTMENT |
| P.O. BOX 269 |
| LITTLETON, CO 80160 |
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Assignment:
4
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 2000 ST JAMES PLACE |
| HOUSTON, TEXAS 77056 |
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| WEATHERFORD TECHNOLOGY HOLDINGS, LLC |
| 2000 ST JAMES PLACE |
| LEGAL IP GROUP |
| HO0USTON, TX 77056 |
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