Patent Assignment Details
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Reel/Frame: | 004664/0680 | |
| Pages: | 1 |
| | Recorded: | 12/17/1986 | | |
Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST. |
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Total properties:
1
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Patent #:
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Issue Dt:
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10/04/1988
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Application #:
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06942774
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Filing Dt:
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12/17/1986
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Title:
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METHOD AND DEVICE FOR MEASURING VIBRATIONAL STRESSES AND VELOCITIES OF WAVES PROPAGATED WITHIN FORMATIONS SURROUNDING A WELLBORE
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Assignee
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TOUR ELF 2, PLACE DE LA COUPOLE LA DEFENSE 6 F-92400 |
COURBEVOIE, FRANCE |
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Correspondence name and address
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SCHWARTZ, JEFFERY, SCHWAAB,
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MACK, BLUMENTHAL & EVANS
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P.O. BOX 299
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ALEXANDRIA, VA 22313
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