申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
PERRIN, CEDRIC;DOWNTON, GEOFFREY, C.;BOGATH, CHRISTOPHER, C.;LACOUR, BERTRAND;CRERAR, PAUL |