Patent Assignment Abstract of Title
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Total Assignments:
1
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Patent #:
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Issue Dt:
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11/28/2006
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Application #:
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10492559
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Filing Dt:
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08/12/2004
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Publication #:
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Pub Dt:
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02/23/2006
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Inventors:
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Bruno H Walter, Robert M Tessari, Per G Angman
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Title:
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VALVE METHOD FOR DRILLING WITH CASING USING PRESSURIZED DRILLING FLUID
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 6204- 6A STREET SW |
| CALGARY, ALBERTA, CANADA T2P 2K7 |
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| BENNETT JONES LLP |
| ROSEANN CALDWELL |
| 4500 BANKERS HALL EAST |
| 855-2ND STREET SW |
| CALGARY, AB T2P 4K7 |
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