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发明名称
BLACKBOARD ERASER
摘要
申请公布号
KR930000244(Y1)
申请公布日期
1993.01.25
申请号
KR19900010482U
申请日期
1990.07.14
申请人
SO, IM - KYO
发明人
SO, IM - KYO
分类号
B43L21/02;(IPC1-7):B43L21/02
主分类号
B43L21/02
代理机构
代理人
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