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发明名称
Automatic manhole cover
摘要
申请公布号
KR200416048(Y1)
申请公布日期
2006.05.10
申请号
KR20060000271U
申请日期
2006.01.05
申请人
发明人
分类号
E03F5/06
主分类号
E03F5/06
代理机构
代理人
主权项
地址
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