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发明名称
Locking type manhole cover
摘要
申请公布号
KR100750286(B1)
申请公布日期
2007.08.17
申请号
KR20050096880
申请日期
2005.10.14
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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