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经营范围
发明名称
Cover coupling apparatus for manhole having open/close projection
摘要
申请公布号
KR100563767(B1)
申请公布日期
2006.03.24
申请号
KR20040035168
申请日期
2004.05.18
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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