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发明名称
Elektromagnetisches Spielzeug
摘要
申请公布号
DE509897(C)
申请公布日期
1930.10.13
申请号
DE1928F065294D
申请日期
1928.02.03
申请人
DR. EUGEN FRAENKEL
发明人
分类号
A63H33/26
主分类号
A63H33/26
代理机构
代理人
主权项
地址
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