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发明名称
Direction indication style Braille type block
摘要
申请公布号
KR200439459(Y1)
申请公布日期
2008.04.04
申请号
KR20060027951U
申请日期
2006.10.17
申请人
发明人
分类号
E01C5/00;E01C5/20
主分类号
E01C5/00
代理机构
代理人
主权项
地址
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