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发明名称
Non-slip plate fixed type man-hole cover
摘要
申请公布号
KR20140002114(U)
申请公布日期
2014.04.14
申请号
KR20120008997U
申请日期
2012.10.04
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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