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发明名称
Wanderpfeilerausbau fuer untertaegigen Grubenbetrieb
摘要
申请公布号
DE1301291(B)
申请公布日期
1969.08.21
申请号
DE1964H052002
申请日期
1964.03.10
申请人
HAARMANN;DR. ING. ARNOLD
发明人
分类号
E21D23/00;E21D23/04
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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