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发明名称
READING AID
摘要
申请公布号
WO03067547(A8)
申请公布日期
2003.12.31
申请号
WO2003IB00375
申请日期
2003.02.05
申请人
PRAH, HERBERT
发明人
PRAH, HERBERT
分类号
G09B17/00;(IPC1-7):G09B17/00;G09B17/04
主分类号
G09B17/00
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代理人
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