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发明名称
GESTELL ZUM AUFHAENGEN VON FLACHBILDERN, TAFELN U. DGL.
摘要
申请公布号
DE1746153(U)
申请公布日期
1957.06.06
申请号
DE195700L8060U
申请日期
1957.03.29
申请人
LEHRMITTELVERLAG WILHELM HAGEMANN
发明人
分类号
主分类号
代理机构
代理人
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