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经营范围
发明名称
Multiroal Compression Manhole Cover
摘要
申请公布号
KR100688894(B1)
申请公布日期
2007.03.02
申请号
KR20050005192
申请日期
2005.01.20
申请人
发明人
分类号
E02D29/14
主分类号
E02D29/14
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代理人
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