申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT N.V.;LOVELL, JOHN R.;ALTINKOPRU, TEOMAN;BUCHER, ROBERT;ZHENG, SHUNFENG |
发明人 |
LOVELL, JOHN R.;ALTINKOPRU, TEOMAN;BUCHER, ROBERT;ZHENG, SHUNFENG |