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发明名称
EDUCATIONAL APPLIANCE
摘要
申请公布号
KR930008066(Y1)
申请公布日期
1993.12.08
申请号
KR19920002248U
申请日期
1992.02.17
申请人
CHOE, HAE - WON
发明人
CHOE, HAE - WON
分类号
G09B1/00;(IPC1-7):G09B1/00
主分类号
G09B1/00
代理机构
代理人
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地址
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