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发明名称
braille plate for eyesight handicapped person
摘要
申请公布号
KR200468392(Y1)
申请公布日期
2013.08.09
申请号
KR20130000172U
申请日期
2013.01.08
申请人
发明人
分类号
G09B21/00;G09F7/16
主分类号
G09B21/00
代理机构
代理人
主权项
地址
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