申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;SERVICES PETROLIERS SCHLUMBERGER;PETROLEUM RESEARCH AND DEVELOPMENT N.V.;SCHLUMBERG CANADA LIMITED;SCHLUMBERGER HOLDINGS LIMITED;SANDERS, MICHAEL, JULIAN;TULETT, JOHN, RICHARD |
发明人 |
SANDERS, MICHAEL, JULIAN;TULETT, JOHN, RICHARD |