Patent Assignment Details
NOTE:Results display only for issued patents and published applications.
For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 014186/0438 | |
| Pages: | 13 |
| | Recorded: | 06/06/2003 | | |
| Conveyance: | FOURTH AMENDMENT TO COLLATERAL ASSIGNMENT |
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Total properties:
9
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Patent #:
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Issue Dt:
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10/27/1981
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Application #:
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06083988
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Filing Dt:
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10/11/1979
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Title:
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CABLE TOOL WITH CIRCULATING DRILL STEM
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Patent #:
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Issue Dt:
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06/08/1982
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Application #:
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06138079
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Filing Dt:
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04/07/1980
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Title:
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METHOD FOR MANUFACTURING A ROTARY DRILL BIT HAVING A SOLID FORGED, UNITARY BODY
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Patent #:
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Issue Dt:
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06/05/1984
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Application #:
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06314784
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Filing Dt:
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10/26/1981
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Title:
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BEARING SEAL FOR ROTATING CUTTER DRILL BIT
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Patent #:
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Issue Dt:
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08/16/1988
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Application #:
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07071157
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Filing Dt:
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07/08/1987
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Title:
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ASYMMETRICAL ROTARY CONE BIT
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Patent #:
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Issue Dt:
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08/31/1999
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Application #:
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08878622
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Filing Dt:
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06/19/1997
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Title:
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ROCK BIT WITH IMPROVED THRUST FACE
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Patent #:
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Issue Dt:
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10/09/2001
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Application #:
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09457425
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Filing Dt:
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12/07/1999
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Title:
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BI-CENTER BIT ASSEMBLY
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Patent #:
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Issue Dt:
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09/17/2002
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Application #:
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09669998
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Filing Dt:
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09/25/2000
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Title:
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ROTARY CONE BIT FOR CUTTING REMOVAL
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Patent #:
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Issue Dt:
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12/03/2002
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Application #:
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09777295
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Filing Dt:
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02/05/2001
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Title:
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SUPERABRASIVE CUTTING ELEMENT
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Patent #:
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Issue Dt:
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05/27/2003
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Application #:
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09798171
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Filing Dt:
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03/02/2001
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Publication #:
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Pub Dt:
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09/05/2002
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Title:
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DRAG-TYPE CASING MILL/DRILL BIT
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Assignee
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| 61 GRASSMARKET |
| P.O. BOX 12, UBERIOR HOUSE |
| EDINBURGH EH1 2JF, SCOTLAND |
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Correspondence name and address
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CORPORATION SERVICE COMPANY
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AMY LEE BRADY
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80 STATE STREET, 6TH FLOOR
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ALBANY, NY 12207
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