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发明名称
FALLTREPPE ZUR VERTIKALEN ABWAERTSFOERDERUNG VON GUT IM BERGMAENNISCHEN UNTERTAGEBETRIEB.
摘要
申请公布号
DE1700182(U)
申请公布日期
1955.06.08
申请号
DE195500B0943U
申请日期
1955.02.17
申请人
JOSEF BRAND
发明人
JOSEF BRAND
分类号
主分类号
代理机构
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