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发明名称
BORING MACHINE FOR WEAK GROUND
摘要
申请公布号
KR20060061066(A)
申请公布日期
2006.06.07
申请号
KR20040099930
申请日期
2004.12.01
申请人
BAIK, NAM JIN;HONG JI ENGINEERING & CONSTRUCTION CO., LTD.
发明人
BAIK, NAM JIN
分类号
E21B4/00;E21B10/00
主分类号
E21B4/00
代理机构
代理人
主权项
地址
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