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发明名称
LEHRSPIEL.
摘要
申请公布号
DE1610786(U)
申请公布日期
1950.07.27
申请号
DE194800D0080U
申请日期
1948.10.01
申请人
DORA ANNA FREUND
发明人
DORA ANNA FREUND
分类号
主分类号
代理机构
代理人
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