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发明名称
A DEVICE FOR FIXING HEIGHT OF BLACKBOARD WHICH IS SHIFTING VERTICALLY
摘要
申请公布号
KR200176247(Y1)
申请公布日期
2000.04.15
申请号
KR19980005381U
申请日期
1998.04.07
申请人
KIM, MIN JA
发明人
KIM, MIN JA
分类号
A47B97/04;(IPC1-7):A47B97/04
主分类号
A47B97/04
代理机构
代理人
主权项
地址
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