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发明名称
EDUCATIONAL/AMUSEMENT DEVICE
摘要
申请公布号
GB8311934(D0)
申请公布日期
1983.06.02
申请号
GB19830011934
申请日期
1983.04.30
申请人
FERRIER, C W
发明人
分类号
G09B1/20;(IPC1-7):G09B1/20
主分类号
G09B1/20
代理机构
代理人
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地址
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