申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;MARTIN, BRADLEY STUART;GUIEZE, PAUL;MACWILLIAM, DAVID;ATKINSON, MALCOLM |
发明人 |
MARTIN, BRADLEY STUART;GUIEZE, PAUL;MACWILLIAM, DAVID;ATKINSON, MALCOLM |