申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;BASER, BELGIN;BONEY, CURTIS L.;CLUM, ERIC;LOPEZ DE CARDENAS, JORGE E. |
发明人 |
BASER, BELGIN;BONEY, CURTIS L.;CLUM, ERIC;LOPEZ DE CARDENAS, JORGE E. |