申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;RADTKE, RICHARD, J.;PERCHNOK, ROBERT;MCCOY, MATTHEW |
发明人 |
RADTKE, RICHARD, J.;PERCHNOK, ROBERT;MCCOY, MATTHEW |