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发明名称
EDUCATIONAL APPLIANCE
摘要
申请公布号
KR930008069(Y1)
申请公布日期
1993.12.08
申请号
KR19920000073U
申请日期
1992.01.07
申请人
JO, HYONG - JE
发明人
JO, HYONG - JE
分类号
G09B19/06;(IPC1-7):G09B19/06
主分类号
G09B19/06
代理机构
代理人
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