申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LTD;HALDORSEN, JAKOB BRANDT UTNE;COATES, RICHARD T. |
发明人 |
HALDORSEN, JAKOB BRANDT UTNE;COATES, RICHARD T. |