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发明名称
Educational apparatus
摘要
申请公布号
GB2298077(B)
申请公布日期
1999.01.13
申请号
GB19960003428
申请日期
1996.02.19
申请人
KEVIN * HARDINGE
发明人
KEVIN * HARDINGE
分类号
G09B11/04;G09B13/00;(IPC1-7):G09B11/04;B43L13/00
主分类号
G09B11/04
代理机构
代理人
主权项
地址
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