申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT N.V.;ST. MICHEL, NATHAN;WAGO, TOSHIMICHI;HUBENSCHMIDT, JOE;PESSIN, JEAN-LOUIS |
发明人 |
ST. MICHEL, NATHAN;WAGO, TOSHIMICHI;HUBENSCHMIDT, JOE;PESSIN, JEAN-LOUIS |