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发明名称
Fixing structure of hight adjustment ring of manhole
摘要
申请公布号
KR200400426(Y1)
申请公布日期
2005.11.08
申请号
KR20050022406U
申请日期
2005.08.02
申请人
发明人
分类号
E02D29/12
主分类号
E02D29/12
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代理人
主权项
地址
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