Patent Assignment Details
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For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 011590/0297 | |
| Pages: | 5 |
| | Recorded: | 02/12/2001 | | |
| Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). |
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Total properties:
4
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Patent #:
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Issue Dt:
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10/24/2000
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Application #:
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08948810
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Filing Dt:
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10/09/1997
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Title:
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PUMP DRIVE HEAD BACKSPIN RETARDER
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Patent #:
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Issue Dt:
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09/05/2000
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Application #:
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08948811
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Filing Dt:
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10/09/1997
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Title:
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PUMP DRIVE HEAD PUMP ASSEMBLY WITH A HYDRAULIC PUMP CIRCUIT FOR PREVENTING BACK-SPIN WHEN THE DRIVE HEAD HAS BEEN SHUT OFF
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Patent #:
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Issue Dt:
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06/27/2000
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Application #:
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09076188
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Filing Dt:
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05/12/1998
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Title:
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CENTRIFUGAL BACKSPIN RETARDER AND DRIVEHEAD FOR USE THEREWITH
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Patent #:
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Issue Dt:
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10/03/2000
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Application #:
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09106632
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Filing Dt:
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06/29/1998
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Title:
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RIGHT ANGLE DRIVE ADAPTER FOR USE WITH A VERTICAL DRIVE HEAD IN AN OIL WELL PROGRESSING CAVITY PUMP DRIVE
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Assignee
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| 515 POST OAK BLVD., SUITE 600 |
| HOUSTON, TEXAS 77027 |
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Correspondence name and address
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HAYES, SOLOWAY, HENNESSEY, ET AL
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NORMAN P. SOLOWAY
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175 CANAL STREET
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MANCHESTER, NH 03101
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