申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;DOLMAN, LEE, F.;JEFFRYES, BENJAMIN, P.;JOHNSON, ASHLEY, B.;CLARK, BRIAN;MCCULLAGH, JOHN, A. |
发明人 |
DOLMAN, LEE, F.;JEFFRYES, BENJAMIN, P.;JOHNSON, ASHLEY, B.;CLARK, BRIAN;MCCULLAGH, JOHN, A. |