申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;BUSTOS, OSCAR;SAMUEL, MATHEW M.;CHANG, FRANK F.;LI, LEIMING |
发明人 |
BUSTOS, OSCAR;SAMUEL, MATHEW M.;CHANG, FRANK F.;LI, LEIMING |