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发明名称
EDUCATIONAL OR ACTIVITY AID
摘要
申请公布号
GB2170942(B)
申请公布日期
1988.12.21
申请号
GB19850003056
申请日期
1985.02.07
申请人
DORNE FIGGIS
发明人
DORNE * FIGGIS
分类号
G09B19/00;(IPC1-7):G09B19/00
主分类号
G09B19/00
代理机构
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