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发明名称
EDUCATIONAL PAPER PRODUCTION MODEL
摘要
申请公布号
KR200144089(Y1)
申请公布日期
1999.06.15
申请号
KR19970002104U
申请日期
1997.02.12
申请人
SONG'S PAPER CO., LTD.
发明人
SONG, JE-CHUN
分类号
G09B25/02;(IPC1-7):G09B25/02
主分类号
G09B25/02
代理机构
代理人
主权项
地址
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