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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