申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;IVERSEN, TERJE;LI, QINGRUI;PEPPER, RANDOLPH |
发明人 |
IVERSEN, TERJE;LI, QINGRUI;PEPPER, RANDOLPH |