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发明名称
Earth-boring bit
摘要
申请公布号
GB2348658(B)
申请公布日期
2003.07.16
申请号
GB20000005910
申请日期
2000.03.10
申请人
* SMITH INTERNATIONAL INC
发明人
JAMES A * LARSEN;MICHAEL A * SIRACKI
分类号
E21B10/18;E21B10/60;E21B10/61;E21B10/62;(IPC1-7):E21B10/18
主分类号
E21B10/18
代理机构
代理人
主权项
地址
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