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发明名称
Multiple choice question and answer apparatus
摘要
申请公布号
GB2242557(A)
申请公布日期
1991.10.02
申请号
GB19910004540
申请日期
1991.03.04
申请人
WILLIAM PATRICK * GALLAGHER
发明人
WILLIAM PATRICK * GALLAGHER
分类号
G09B7/06;G09B7/073
主分类号
G09B7/06
代理机构
代理人
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