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发明名称
A BRAILLE BLOCK
摘要
申请公布号
KR20100011014(U)
申请公布日期
2010.11.09
申请号
KR20090005282U
申请日期
2009.04.30
申请人
发明人
分类号
E01C5/00;E01C15/00
主分类号
E01C5/00
代理机构
代理人
主权项
地址
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