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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10/20/1992
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Application #:
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07687255
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Filing Dt:
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04/18/1991
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Inventors:
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MICHAEL R. FRISWELL, RICHARD B. ORELUP
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Title:
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SILENT MARKERS FOR PETROLEUM, METHOD OF TAGGING, AND METHOD OF DETECTION
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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| 100 NORTH RIVERSIDE PLAZA |
| CHICAGO, ILLINOIS 60606 |
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| WAYNE E. NACKER |
| 100 NORTH RIVERSIDE PLAZA |
| CHICAGO, IL 60606-1596 |
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Assignment:
2
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 100 INDEPENDENCE MALL WEST |
| PHILADELPHIA, PENNSYLVANIA 19106-2399 |
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| JACQUELINE PEARLMAN |
| 100 INDEPENDENCE MALL WEST |
| PHILADELPHIA, PA 19106-2399 |
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