申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER OVERSEAS S.A.;SCHLUMBERGER OILFIELD ASSISTANCE LIMITED;SCHLUMBERGER SURENCO S.A.;SCHLUMBERGER SERVICES LIMITED;SCHLUMBERGER SEACO INC.;PETROLEUM RESEARCH AND DEVELOPMENT NV;CHEUNG, PHILIP;HAYMAN, ANDREW;PITTMAN, DENNIS |
发明人 |
CHEUNG, PHILIP;HAYMAN, ANDREW;PITTMAN, DENNIS |