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: | 020599/0274 | |
| Pages: | 5 |
| | Recorded: | 03/05/2008 | | |
| Attorney Dkt #: | ROY200/71022 |
| Conveyance: | SECURITY AGREEMENT |
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Total properties:
6
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Patent #:
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Issue Dt:
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11/08/1994
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Application #:
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08178030
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Filing Dt:
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01/06/1994
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Title:
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CEMENTING PLUG
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Patent #:
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Issue Dt:
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09/20/1994
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Application #:
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08189203
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Filing Dt:
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01/31/1994
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Title:
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COUPLING APPARATUS
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Patent #:
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Issue Dt:
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07/18/1995
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Application #:
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08235363
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Filing Dt:
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04/29/1994
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Title:
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CEMENTING PLUG
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Patent #:
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Issue Dt:
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07/25/1995
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Application #:
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08335462
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Filing Dt:
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11/07/1994
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Title:
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CEMENTING PLUG
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Patent #:
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Issue Dt:
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01/28/2003
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Application #:
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10054434
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Filing Dt:
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01/18/2002
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Publication #:
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Pub Dt:
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05/23/2002
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Title:
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PRESSURE RELIEF VALVE
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Patent #:
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Issue Dt:
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12/27/2005
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Application #:
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10613190
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Filing Dt:
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07/03/2003
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Publication #:
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Pub Dt:
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01/06/2005
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Title:
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FILLING AND CIRCULATING APPARATUS FOR SUBSURFACE EXPLORATION
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Assignee
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| 888-3RD STREET SW |
| SUITE 1100 BANKERS HALL WEST |
| CALGARY, ALBERTA, CANADA T2P 5C5 |
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Correspondence name and address
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PHILLINA LAI
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1001 FANNIN STREET
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2500 FIRST CITY TOWER
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HOUSTON, TX 77002-6760
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