申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
YHUEL, BERNARD;GAMBIER, PHILIPPE;DESSOULAVY, GILLES H.;TOFFANIN, EZIO;WALFORD, MERRICK |