(84) | Designated Contracting States: | | DE FR GB IT NL |
(30) | Priority: | 13.03.1987 US 25319
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(71) | Applicants: | | - SCHLUMBERGER LIMITED
New York, N.Y. 10172 (US) Designated Contracting States: DE GB NL - SOCIETE DE PROSPECTION ELECTRIQUE
SCHLUMBERGER
F-75340 Paris Cédex 07 (FR) Designated Contracting States: FR IT
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| (72) | Inventors: | | - Wraight, Peter
Missouri City
Texas 77459 (US) - Marienbach, Edouard
Houston
Texas 77025 (US) - Hache, Jean-Michel
Sugar Land
Texas 77478 (US) - Evans, Mike
Missouri City
Texas 77459 (US) - Rhein-Knudsen, Erik
Missouri City
Texas 77459 (US)
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(74) | Representative: Hagel, Francis | | Etudes et Productions Schlumberger
A L'ATTENTION DU SERVICE BREVETS
26, rue de la Cavée
B.P. 202 92142 Clamart Cédex 92142 Clamart Cédex (FR) |
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