申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;ZHAN, LANG;KANNAN, DHANDAYUTHAPANI;FILAS, JAMES G.;BIRKETT, GRAHAM |
发明人 |
ZHAN, LANG;KANNAN, DHANDAYUTHAPANI;FILAS, JAMES G.;BIRKETT, GRAHAM |