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经营范围
发明名称
ERASER OF THE BLACK- BOARD
摘要
申请公布号
KR100718506(B1)
申请公布日期
2007.05.18
申请号
KR20060063327
申请日期
2006.07.03
申请人
发明人
分类号
B43L21/00
主分类号
B43L21/00
代理机构
代理人
主权项
地址
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