申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER CANADA LIMITED;PRAD RESEARCH AND DEVELOPMENT LIMITED;GAMBIER, PHILIPPE;COQUILLEAU, LAURENT;METSON, JAMES |
发明人 |
GAMBIER, PHILIPPE;COQUILLEAU, LAURENT;METSON, JAMES |