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发明名称
BRAILLE/LEADING BLOCK
摘要
申请公布号
KR100661268(B1)
申请公布日期
2006.12.28
申请号
KR20050037366
申请日期
2005.05.04
申请人
发明人
分类号
E01C5/00
主分类号
E01C5/00
代理机构
代理人
主权项
地址
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