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发明名称	TEACHING MODEL FOR EDUCATIONAL PURPOSES
摘要
申请公布号	EP0115849(A3)	申请公布日期	1985.12.04
申请号	EP19840100996	申请日期	1984.02.01
申请人	WELTE, WALTER	发明人	WELTE, WALTER
分类号	G09B19/24;(IPC1-7):G09B19/00	主分类号	G09B19/24
代理机构		代理人
主权项
地址

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