申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;SMITH INTERNATIONAL, INC.;PRAD RESEARCH AND DEVELOPMENT LIMITED |
发明人 |
MAHAJAN, MANOJ D.;DEWEY, CHARLES H.;SWADI, SHANTANU N.;FRIEDL, WALTER E.;POTTER, CHRISTOPHER KANG;FAIRWEATHER, ALAN |