申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;PRAD RESEARCH AND DEVELOPMENT LIMITED;PRAD RESEARCH AND DEVELOPMENT LIMITED;MEYYAPPAN, RAMASWAMY;EL-KHAZINDAR, YASSER;MACDOUGALL, TOM |
发明人 |
MEYYAPPAN, RAMASWAMY;EL-KHAZINDAR, YASSER;MACDOUGALL, TOM |