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经营范围
发明名称
BLACKBOARD ERASER
摘要
申请公布号
KR930000113(Y1)
申请公布日期
1993.01.09
申请号
KR19900014192U
申请日期
1990.09.14
申请人
LEE, KUK - SONG
发明人
LEE, KUK - SONG
分类号
B43L21/02;(IPC1-7):B43L21/02
主分类号
B43L21/02
代理机构
代理人
主权项
地址
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