Patent Assignment Details
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Reel/Frame: | 006015/0367 | |
| Pages: | 2 |
| | Recorded: | 02/13/1992 | | |
Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST. |
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Total properties:
1
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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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Title:
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METHOD OF MAINTAINING SUBTERRANEAN FORMATION PERMEABILITY AND INHIBITING CLAY SWELLING
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Assignee
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5605 GRAND AVENUE |
PITTSBURGH, PENNSYLVANIA 15225 |
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Correspondence name and address
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WILLIAM L. KRAYER
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241 MERION DR.
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PITTSBURGH, PA 15228
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