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经营范围
发明名称
Drill bit, cutter element and method of manufacture
摘要
申请公布号
GB2417262(B)
申请公布日期
2007.05.23
申请号
GB20050017086
申请日期
2005.08.19
申请人
SMITH INTERNATIONAL INC
发明人
ZHOU YONG;JAMES C MINIKUS;ARMARDEEP SINGH;QUAN NGUYEN;SHARATH KOLACHALAM
分类号
E21B10/16;E21B10/50
主分类号
E21B10/16
代理机构
代理人
主权项
地址
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