申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER SURENCO S.A.;SCHLUMBERGER OVERSEAS, S.A.;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT N.V.;SCHLUMBERGER HOLDINGS LIMITED |
发明人 |
SCHEVEN, ULRICH;TERNEAUD, OLIVIER J.;FREED, DENISE;VENKATARAMANAN, LALITHA;HURLIMANN, MARTIN D. |