申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;HALL, DAVID, R.;CROCKETT, RONALD, B.;FOX, JOSEPH, R.;TAMANG, ASHOK |
发明人 |
HALL, DAVID, R.;CROCKETT, RONALD, B.;FOX, JOSEPH, R.;TAMANG, ASHOK |