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经营范围
发明名称
Tunnel emergency exit escape
摘要
申请公布号
KR200447895(Y1)
申请公布日期
2010.03.03
申请号
KR20080001275U
申请日期
2008.01.28
申请人
发明人
分类号
E21F11/00
主分类号
E21F11/00
代理机构
代理人
主权项
地址
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