申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;FREEDMAN, ROBERT;GANESAN, KRISHNAMURTHY;GRANT, DOUGLAS, W. |
发明人 |
FREEDMAN, ROBERT;GANESAN, KRISHNAMURTHY;GRANT, DOUGLAS, W. |