Patent Assignment Details
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For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 007101/0175 | |
| Pages: | 4 |
| | Recorded: | 08/12/1994 | | |
| Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
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Total properties:
6
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Patent #:
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Issue Dt:
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11/17/1981
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Application #:
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06129948
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Filing Dt:
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03/13/1980
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Title:
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DOUBLE CORE BARREL
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Patent #:
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Issue Dt:
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01/31/1984
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Application #:
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06335031
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Filing Dt:
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12/28/1981
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Title:
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INNER TUBE ELEMENT FOR A DOUBLE TUBE CORING APPARATUS AND PROCESS FOR THE MANUFACTURE OF THIS TUBE ELEMENT
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Patent #:
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Issue Dt:
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02/11/1986
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Application #:
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06560001
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Filing Dt:
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12/09/1983
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Title:
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PROCESS FOR MANUFACTURING THE INNER TUBE ELEMENT FOR A DOUBLE TUBE CORING APPARATUS
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Patent #:
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Issue Dt:
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05/20/1986
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Application #:
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06634956
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Filing Dt:
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07/27/1984
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Title:
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WELL BORE ENLARGER
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Patent #:
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Issue Dt:
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08/23/1988
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Application #:
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07050357
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Filing Dt:
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05/18/1987
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Title:
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COREBARREL
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Patent #:
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Issue Dt:
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12/19/1989
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Application #:
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07181347
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Filing Dt:
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04/14/1988
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Title:
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DEVICE FOR CLOSING A CORE BARREL INSTALLED IN A DRILLING RIG
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Assignee
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| 3000 NORTH SAM HOUSTON PARKWAY |
| HOUSTON,, TEXAS 77032 |
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Correspondence name and address
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WILLIAM E. JOHNSON, JR.
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DRESSER INDUSTRIES, INC.
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LEGAL DEPT.
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3000 N. SAM HOUSTON PARKWAY E.
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HOUSTON, TX 77032
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