TUTORIAL BY TELEPHONE AND VIDEO,申请号GR19870100636-传众专利搜索

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发明名称	TUTORIAL BY TELEPHONE AND VIDEO
摘要
申请公布号	GR870636(B)	申请公布日期	1987.05.05
申请号	GR19870100636	申请日期	1987.04.23
申请人	DOUKAS HRISTOS	发明人	DOUKAS HRISTOS
分类号		主分类号
代理机构		代理人
主权项
地址

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