申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER HOLDINGS LIMITED;PRAD RESEARCH AND DEVELOPMENT N.V.;GROVES, JOEL, LEE;VALLEE, ETIENNE;WRAIGHT, PETER |
发明人 |
GROVES, JOEL, LEE;VALLEE, ETIENNE;WRAIGHT, PETER |