申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;BAYLISS, MARTIN;RICHARDS, EDWARD;WALLWORK, CHRISTOPHER |
发明人 |
BAYLISS, MARTIN;RICHARDS, EDWARD;WALLWORK, CHRISTOPHER |