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发明名称
POLYCRYSTALLINE DIAMOND COMPACT DRILL BIT BLADE DESIGN AND NOZZLE PLACEMENT
摘要
申请公布号
EP2297425(A1)
申请公布日期
2011.03.23
申请号
EP20090734311
申请日期
2009.04.23
申请人
SAUDI ARABIAN OIL COMPANY
发明人
PLAZA, GABRIEL DARIO CARRILLO
分类号
E21B10/61
主分类号
E21B10/61
代理机构
代理人
主权项
地址
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