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发明名称
Multi-purpose reading aid
摘要
申请公布号
GB2220276(A)
申请公布日期
1990.01.04
申请号
GB19890011483
申请日期
1989.05.18
申请人
DECLAN GERARD ANTHONY * MCCARTHY
发明人
DECLAN GERARD ANTHONY * MCCARTHY
分类号
G09B17/02
主分类号
G09B17/02
代理机构
代理人
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