申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;PRAD RESEARCH AND DEVELOPMENT LIMITED;FORDHAM, EDMUND;FREED, DENISE;CHENG, YUESHENG;EDWARDS, JOHN |
发明人 |
SCHLUMBERGER CANADA LIMITED;FORDHAM, EDMUND;FREED, DENISE;CHENG, YUESHENG;EDWARDS, JOHN |