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发明名称
Cutter element
摘要
申请公布号
GB0330140(D0)
申请公布日期
2004.02.04
申请号
GB20030030140
申请日期
2000.12.15
申请人
SMITH INTERNATIONAL INC
发明人
分类号
E21B10/56;E21B10/567;E21B10/573
主分类号
E21B10/56
代理机构
代理人
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地址
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