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发明名称
LEHR- UND ANSCHAUUNGSMITTEL FUER ERSTLESEUNTERRICHT.
摘要
申请公布号
DE1938338(U)
申请公布日期
1966.05.12
申请号
DE196600M3864U
申请日期
1966.01.14
申请人
RUDOLF MAIER
发明人
RUDOLF MAIER
分类号
主分类号
代理机构
代理人
主权项
地址
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