申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT N.V.;LAFFERTY, THEODORE JR.;UNDERHILL, WILLIAM;NUTT, LES;MARTINEZ, ALEJANDRO |
发明人 |
LAFFERTY, THEODORE JR.;UNDERHILL, WILLIAM;NUTT, LES;MARTINEZ, ALEJANDRO |