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发明名称
Vorrichtung zum Ablesen von Landkarten, Bildern, Schriften u. dgl.
摘要
申请公布号
DE504358(C)
申请公布日期
1930.08.02
申请号
DENDATS088255D
申请日期
申请人
SIEGFRIED SAMSON;ALFRED VOCKE
发明人
分类号
G09B29/10
主分类号
G09B29/10
代理机构
代理人
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