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发明名称
摘要
申请公布号
KR200305518(Y1)
申请公布日期
2003.03.03
申请号
KR20020030888U
申请日期
2002.10.16
申请人
发明人
分类号
G09B5/04
主分类号
G09B5/04
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代理人
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