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发明名称
CONVECTION-TYPE BLACKBOARD ERASER
摘要
申请公布号
KR100222130(B1)
申请公布日期
1999.10.01
申请号
KR19960046158
申请日期
1996.10.16
申请人
SHIM, KYE-JA
发明人
MOON, SIN-HO
分类号
B43L21/00;(IPC1-7):B43L21/00
主分类号
B43L21/00
代理机构
代理人
主权项
地址
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