申请人 |
SCHLUMBERGER LIMITED;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER OVERSEAS S.A.;PRAD RESEARCH AND DEVELOPMENT N.V.;SCHLUMBERGER SURENCO, S.A. |
发明人 |
RAMOS, ROGERIO, T.;MADHAVAN, RAGHU;YAMATE, TSUTOMU;BALKUNAS, STEPHEN, C.;SCHROEDER, ROBERT, J. |