Patent Assignment Details
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Reel/Frame: | 005191/0100 | |
| Pages: | 2 |
| | Recorded: | 11/27/1989 | | |
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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01/15/1991
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Application #:
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07425661
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Filing Dt:
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10/20/1989
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Title:
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METHOD AND APPARATUS FOR DETERMINING COMPRESSIONAL FIRST ARRIVAL TIMES FROM WAVEFORM THRESHOLD CROSSINGS PROVIDED BY APPARATUS DISPOSED IN A SONIC WELL TOOL
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Correspondence name and address
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SCHLUMBERGER WELL SERVICES
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P. O. BOX 2175
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HOUSTON, TX 77252-2175
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