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发明名称
Navigationslehrgeraet
摘要
申请公布号
DE748435(C)
申请公布日期
1944.11.02
申请号
DE1942L106706D
申请日期
1942.02.01
申请人
发明人
KOESTER DIPL.-ING. PAUL-EDUARD
分类号
G09B9/24
主分类号
G09B9/24
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代理人
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