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发明名称
DIDACTIC LEARNING DEVICE, PREFERABLY FOR USE IN PRIMARY SCHOOLS
摘要
申请公布号
HU9903140(A3)
申请公布日期
2000.04.28
申请号
HU19990003140
申请日期
1997.08.14
申请人
WAGNER, RAIMONDE, QUERFURT
发明人
分类号
G09B3/04;G09B19/02
主分类号
G09B3/04
代理机构
代理人
主权项
地址
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