申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION;SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;VAGHI, FRANCESCO;LORETZ, YVES D. |
发明人 |
VAGHI, FRANCESCO;LORETZ, YVES D. |