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发明名称
Educational and amusement device
摘要
申请公布号
GB2138987(A)
申请公布日期
1984.10.31
申请号
GB19830011934
申请日期
1983.04.30
申请人
CHARLES WIGHTON * FERRIER
发明人
CHARLES WIGHTON * FERRIER
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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