申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;POMERANTZ, ANDREW E.;MULLINS, OLIVER C.;ANDREWS, ALBERT BALLARD;LEHNE, ERIC |
发明人 |
POMERANTZ, ANDREW E.;MULLINS, OLIVER C.;ANDREWS, ALBERT BALLARD;LEHNE, ERIC |