| 申请人 |
SCHLUMBERGER HOLDINGS LIMITED;PETROLEUM RESEARCH AND DEVELOPMENT N.V.;SCHLUMBERGER CANADA LIMITED;SERVICIOS DE PERFILAJES ELECTRONICOS, S.A.;SCHLUMBERGER OILFIELD ASSISTANCE LIMITED;SCHLUMBERGER SEACO INC.;SCHLUMBERGER SERVICES LIMITED;SCHLUMBERGER SURENCO S.A.;SCHLUMBERGER TECHNOLOGY B.V.;SERVICES PETROLIERS SCHLUMBERGER |
发明人 |
DOWNTON, GEOFF |
