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发明名称
Drilling tool with twisted water hole
摘要
申请公布号
KR100946083(B1)
申请公布日期
2010.03.10
申请号
KR20020044280
申请日期
2002.07.26
申请人
发明人
分类号
B23B51/02
主分类号
B23B51/02
代理机构
代理人
主权项
地址
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