申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;3M INNOVATIVE PROPERTIES COMPANY;WILLBERG, DEAN MICHAEL;CARLSON, JAMES G.;KADOMA, IGNATIUS A.;WU, YONG K.;CRANDALL, MICHAEL D. |
发明人 |
WILLBERG, DEAN MICHAEL;CARLSON, JAMES G.;KADOMA, IGNATIUS A.;WU, YONG K.;CRANDALL, MICHAEL D. |