Patent Assignment Details
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| Reel/Frame: | 004956/0058 | |
| Pages: | 2 |
| | Recorded: | 09/06/1988 | | |
| 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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07/10/1990
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Application #:
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07241170
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Filing Dt:
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09/06/1988
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Title:
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GRAVEL PACKING TOOL
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Correspondence name and address
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STEPHEN A. LITTLEFIELD
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DOWELL SCHLUMBERGER INC.,
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P. O. BOX 2710
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TULSA, OK 74101
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