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发明名称	GROUP STUDY MANAGING SYSTEM
摘要
申请公布号	JPS539638(A)	申请公布日期	1978.01.28
申请号	JP19760084133	申请日期	1976.07.15
申请人	RICOH KK;RIKOO KIYOUIKU KIKI KK	发明人	YAMAUCHI SATOSHI;MANIWA YOSHIO
分类号	G09B7/07;G09B7/073	主分类号	G09B7/07
代理机构		代理人
主权项
地址

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