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发明名称
MANHOLE STRUCTURE INCLUDING SQUARE-SHAPED MANHOLE COVER AND MANHOLE FRAME
摘要
申请公布号
KR20120000975(U)
申请公布日期
2012.02.09
申请号
KR20100008031U
申请日期
2010.07.30
申请人
发明人
分类号
E02D29/14;E02D29/12
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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