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发明名称
SCHABLONE ZUM KARTEN-ZEICHNEN IM GEOGRAPHIE-UNTERRICHT.
摘要
申请公布号
DE1620547(U)
申请公布日期
1951.03.01
申请号
DE195000B3923U
申请日期
1950.11.27
申请人
BERMPOHL-APPARATEBAU HANS GUENTHER
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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