Patent Assignment Details
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Reel/Frame: | 004725/0558 | |
| Pages: | 2 |
| | Recorded: | 06/03/1987 | | |
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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03/01/1988
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Application #:
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07012962
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Filing Dt:
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02/10/1987
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Title:
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TOOL FOR CLOSING A PRODUCTION COLUMN IN A WELL
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Assignee
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5000 GULF FREEWAY |
HOUSTON, TEXAS 77023 USA |
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Correspondence name and address
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SCHLUMBERGER TECHNOLOGY CORP.
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ATTN: PATENT COUNSEL
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P.O. BOX 2175
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HOUSTON, TX 77001
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