申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;MACKAY, BRUCE A.;SULLIVAN, PHILIP F.;DROGER, NICOLAS;D'ANGELO, RALPH M.;MILLER, DOUGLAS E. |
发明人 |
MACKAY, BRUCE A.;SULLIVAN, PHILIP F.;DROGER, NICOLAS;D'ANGELO, RALPH M.;MILLER, DOUGLAS E. |