申请人 |
SCHLUMBERGER CANADA LIMITED;AGUIRRE, FRANZ;DUPREE, WADE, D.;HOLLY, MARK;COPOLD, DEREK;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED |
发明人 |
AGUIRRE, FRANZ;DUPREE, WADE, D.;HOLLY, MARK;COPOLD, DEREK |