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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05/18/1993
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Application #:
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07835602
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Filing Dt:
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02/13/1992
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Inventors:
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TODD R. THOMAS, KEVIN W. SMITH
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Title:
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METHOD OF MAINTAINING SUBTERRANEAN FORMATION PERMEABILITY AND INHIBITING CLAY SWELLING
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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5605 GRAND AVENUE |
PITTSBURGH, PENNSYLVANIA 15225 |
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WILLIAM L. KRAYER |
241 MERION DR. |
PITTSBURGH, PA 15228 |
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Assignment:
2
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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515 POST OAK BLVD. |
SUITE 600 |
HOUSTON, TEXAS 77027 |
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WILLIAM L. KRAYER |
1771 HELEN DRIVE |
PITTSBURGH, PA 15216 |
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