申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER CANADA LIMITED;PRAD RESEARCH AND DEVELOPMENT N.V;SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER OVERSEAS S.A.;SCHLUMBERGER SURENCO S.A.;SCHLUMBERGER HOLDINGS LIMITED;D'ANGELO, RALPH, M.;WINKLER, KENNETH, W.;JOHNSON, DAVID, L.;GUSTAVSON, GALE;MULLINS, OLIVER, C. |
发明人 |
D'ANGELO, RALPH, M.;WINKLER, KENNETH, W.;JOHNSON, DAVID, L.;GUSTAVSON, GALE;MULLINS, OLIVER, C. |