申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER HOLDINGS LIMITED;PRAD RESEARCH AND DEVELOPMENT LIMITED;YOSHIUCHI, HIDETOSHI;YAMATE, TSUTOMU;ULLO, JOHN;KAZUHIKO, MATSUMOTO |
发明人 |
YOSHIUCHI, HIDETOSHI;YAMATE, TSUTOMU;ULLO, JOHN;KAZUHIKO, MATSUMOTO |