INTERACTIVE EDUCATIONAL SYSTEM WITH VOICE REACTION AND ACCESS USING TONE-GENERATING TELEPHONE,申请号EP19850306223-传众专利搜索

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发明名称	INTERACTIVE EDUCATIONAL SYSTEM WITH VOICE REACTION AND ACCESS USING TONE-GENERATING TELEPHONE
摘要
申请公布号	EP0214347(B1)	申请公布日期	1991.02.06
申请号	EP19850306223	申请日期	1985.09.02
申请人	ECKMANN, STUART F.	发明人	ECKMANN, STUART F.
分类号	H04M11/00;H04M3/493	主分类号	H04M11/00
代理机构		代理人
主权项
地址

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