申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B. V.;SCHLUMBERGER CANADA LIMITED;PRAD RESEARCH AND DEVELOPMENT LIMITED;VETHE, EIVIND;PINGUET, BRUNO;THERON, BERNARD;SJURSETH, ERIK |
发明人 |
VETHE, EIVIND;PINGUET, BRUNO;THERON, BERNARD;SJURSETH, ERIK |