申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER CANADA LIMITED;SHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LTD;REDDY, CHRISTOPHER MICHAEL;MULLINS, OLIVER C.;RAGHURAMAN, BHAVANI;NELSON, ROBERT K. |
发明人 |
REDDY, CHRISTOPHER MICHAEL;MULLINS, OLIVER C.;RAGHURAMAN, BHAVANI;NELSON, ROBERT K. |