申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;PRAD RESEARCH AND DEVELOPMENT LIMITED;SCHLUMBERGER SEACO, INC.;RINGER, MAURICE;BARRETT, MICHAEL;JEFFRYES, BENJAMIN;ALDRED, WALTER;JOHNSON, ASHLEY;TUNC, GOEKTUERK;COOK, JOHN |
发明人 |
RINGER, MAURICE;BARRETT, MICHAEL;JEFFRYES, BENJAMIN;ALDRED, WALTER;JOHNSON, ASHLEY;TUNC, GOEKTUERK;COOK, JOHN |