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发明名称
BLACKBOARD ERASER
摘要
申请公布号
KR850002458(Y1)
申请公布日期
1985.10.19
申请号
KR19810006744U
申请日期
1981.09.29
申请人
JIN, KUM-SAENG
发明人
JIN, KUM-SAENG
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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