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发明名称
METHOD OF FORMING REFUGE TUNNEL IN CASE OF FIRE IN TUNNEL WITH GRADIENT
摘要
申请公布号
JPS5681800(A)
申请公布日期
1981.07.04
申请号
JP19790156866
申请日期
1979.12.05
申请人
JAPAN NATIONAL RAILWAY
发明人
YAMAMOTO AKINARI
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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