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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06/21/1994
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Application #:
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08012274
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Filing Dt:
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02/01/1993
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Inventor:
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JOHN D. MACPHERSON
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Title:
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METHODS FOR ANALYSIS OF DRILLSTRING VIBRATION USING TORSIONALLY INDUCED FREQUENCY MODULATION
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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3900 ESSEX LANE |
HOUSTON, TEXAS 77027 |
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PHILMORE H. COLBURN II |
FISHMAN, DIONNE & CANTOR |
88 DAY HILL ROAD |
WINDSOR, CT 06095 |
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