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发明名称
Interaktive Lehr- und Lernvorrichtung
摘要
申请公布号
DE20221756(U1)
申请公布日期
2007.07.26
申请号
DE20022021756U
申请日期
2002.12.31
申请人
RIENER, ROBERT;BURGKART, RAINER
发明人
分类号
G09B5/06;G09B23/06;G09B23/30;G09F9/00
主分类号
G09B5/06
代理机构
代理人
主权项
地址
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