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发明名称
Stählerner Grubenausbau in Ring- oder Bogenform
摘要
申请公布号
CH396808(A)
申请公布日期
1965.08.15
申请号
CH19610011044
申请日期
1961.09.22
申请人
RHEINSTAHL WANHEIM GMBH
发明人
HOFFMANN,KARL
分类号
E21D11/22
主分类号
E21D11/22
代理机构
代理人
主权项
地址
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