| 申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED |
发明人 |
CHEN, KUO-CHIANG;SMITS, JAN;HOMAN, DEAN;HAZEN, GARY;ROSTHAL, RICHARD;BONNER, STEVE;WANG, HANMING;WOODBURN, CHARLES |
