Patent Assignment Details
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For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 006457/0128 | |
| Pages: | 4 |
| | Recorded: | 03/15/1993 | | |
| 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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12/12/1995
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Application #:
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07989752
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Filing Dt:
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12/14/1992
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Title:
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ANNULAR SAFETY SYSTEM FOR OIL WELL
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Assignee
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| PATENT DEPARTMENT |
| P.O. BOX 819052 |
| DALLAS, TEXAS 75381-9052 |
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Correspondence name and address
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ROLAND O. COX
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PATENT DEPARTMENT
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OTIS ENGINEERING CORPORATION
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P.O. BOX 819052
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DALLAS, TX 75381-9052
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