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发明名称
AN ABANDONED MINE PITHEAD CLOSER
摘要
申请公布号
KR20090044349(A)
申请公布日期
2009.05.07
申请号
KR20070110422
申请日期
2007.10.31
申请人
MINE RECLAMATION CORP.
发明人
KIM, JAE GEUN
分类号
E21F17/00
主分类号
E21F17/00
代理机构
代理人
主权项
地址
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