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发明名称
MANHOLE FOR REALIZING LOCKING FUNCTION BY USING A PERMANENT MAGNET
摘要
申请公布号
KR20110107509(A)
申请公布日期
2011.10.04
申请号
KR20100026661
申请日期
2010.03.25
申请人
SAM HWA CAST IRON IND. CO., LTD.
发明人
LEE, HYO SANG;YOO, JANG HO;BAEK, HUNG JAI
分类号
E02D29/12;E02D29/14
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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