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发明名称
ROCK DRILL BIT
摘要
申请公布号
KR960001664(Y1)
申请公布日期
1996.02.22
申请号
KR19930004708U
申请日期
1993.03.29
申请人
CHOE, KI - WOON
发明人
CHOE, KI - WOON
分类号
E21B10/00;(IPC1-7):E21B10/00
主分类号
E21B10/00
代理机构
代理人
主权项
地址
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