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发明名称
Navigationslehrgeraet
摘要
申请公布号
DE726805(C)
申请公布日期
1942.10.23
申请号
DE1936S123720D
申请日期
1936.07.31
申请人
SIEMENS APPARATE;MASCHINEN G.M.B.H.
发明人
分类号
G09B9/16
主分类号
G09B9/16
代理机构
代理人
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