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