Patent Assignment Details
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| Reel/Frame: | 006923/0640 | |
| Pages: | 4 |
| | Recorded: | 03/15/1994 | | |
| Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
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Total properties:
1
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Patent #:
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Issue Dt:
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11/15/1994
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Application #:
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08213623
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Filing Dt:
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03/15/1994
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Title:
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SAFETY SUB WITH ASYMMETRICAL WALL ELASTOMERIC CLOSURE FOR RETAINING DRILLING FLUIDS
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Assignee
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| 3300 NORTH SAM HOUSTON |
| PARKWAY EAST |
| HOUSTON, TEXAS 77032 |
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Correspondence name and address
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VADEN, EICKENROHT, THOMPSON, BOULWARE &
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FEATHER, L.L.P. - FRANK S. VADEN III
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ONE RIVERWAY
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SUITE 1100
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HOUSTON, TX 77056
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