申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LTD.;PIPCHUK, DOUGLAS, ALEXANDER;THOMEER, HUBERTUS, VICTOR;SARVARI, CHRISTOPHER |
发明人 |
PIPCHUK, DOUGLAS, ALEXANDER;THOMEER, HUBERTUS, VICTOR;SARVARI, CHRISTOPHER |