申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;MERLAU, DAVID;ZHAN, LANG;KANNAN, DHANDAYUTHAPANI;BENTON, JIM, B. |
发明人 |
MERLAU, DAVID;ZHAN, LANG;KANNAN, DHANDAYUTHAPANI;BENTON, JIM, B. |