申请人 |
SCHLUMBERGER CANADA LIMITED;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER HOLDINGS LIMITED;RAMSHAW, SYLVAIN;POP, JULIAN, J.;SWINBURNE, PETER;HSU, KAI;VILLAREAL, STEVEN, G. |
发明人 |
RAMSHAW, SYLVAIN;POP, JULIAN, J.;SWINBURNE, PETER;HSU, KAI;VILLAREAL, STEVEN, G. |