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发明名称
AN APPARATUS FOR FIXING AND AUTOMATICALLY LOCKING THE MANHOLE COVER
摘要
申请公布号
KR100941071(B1)
申请公布日期
2010.02.09
申请号
KR20070104251
申请日期
2007.10.16
申请人
发明人
分类号
E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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