申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;HINKEL, JERALD J.;ENGLAND, KEVIN W.;WILLBERG, DEAN M. |
发明人 |
HINKEL, JERALD J.;ENGLAND, KEVIN W.;WILLBERG, DEAN M. |