Patent Assignment Abstract of Title
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Total Assignments:
3
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Patent #:
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Issue Dt:
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03/30/1993
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Application #:
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07744859
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Filing Dt:
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08/14/1991
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Inventor:
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RICHARD E. LETURNO
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Title:
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DRILLING WITH CASING AND RETRIEVABLE DRILL BIT
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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| MICHAEL E. MARTIN |
| PATENT DEPT., |
| ATLANTIC RICHFIELD COMPANY |
| 2300 WEST PLANO PARKWAY |
| PLANO, TX 75075 |
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Assignment:
2
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 6204 6A STREET S.E. |
| CALGARA, ALBERTA, T2H 2B7, CANADA |
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| TESCO CORPORATION |
| KENNETH M. BABAN |
| GENERAL COUNSEL |
| 6204 6A STREET S.E. |
| CALGARY, ALBERTA T2H 2B7 CANADA |
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Assignment:
3
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| 8204- 6A STREET SE |
| CALGARY, ALBERTA T2H 287 |
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| BENNETT JONES LLP |
| ROSEANN B. CALDWELL |
| 4500 BANKERS HALL EAST |
| 855 - 2ND STREET SE |
| CALGARY, AB T2P 4K7 |
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