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经营范围
发明名称
Apparatus having air curtain for preventing smoke dispersion through cross passage of twin tube tunnel
摘要
申请公布号
KR200435463(Y1)
申请公布日期
2007.01.24
申请号
KR20060026326U
申请日期
2006.09.28
申请人
发明人
分类号
E21F17/103;A62C2/06;A62C3/00
主分类号
E21F17/103
代理机构
代理人
主权项
地址
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