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发明名称
Automatic stopper unit of horizontal high velocity blast shaking for use in construction of tunnel etc.
摘要
申请公布号
KR20120007557(U)
申请公布日期
2012.11.02
申请号
KR20110003517U
申请日期
2011.04.25
申请人
发明人
分类号
E21D9/00;E21D11/00
主分类号
E21D9/00
代理机构
代理人
主权项
地址
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