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发明名称
Lern- und Spielgerät zum Rechnen
摘要
申请公布号
CH517982(A)
申请公布日期
1972.01.15
申请号
CH19690010838
申请日期
1969.07.16
申请人
SCHILKROET AG
发明人
THEVIS-EIGELSHOFEN,KAROLA
分类号
G09B19/02;(IPC1-7):G09B19/02
主分类号
G09B19/02
代理机构
代理人
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