申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;VARKEY, JOSEPH;YUN, JUSHIK;PROTASOV, VADIM;CHANG, SHENG |
发明人 |
VARKEY, JOSEPH;YUN, JUSHIK;PROTASOV, VADIM;CHANG, SHENG |