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发明名称
摘要
申请公布号	FR2419548(B1)	申请公布日期	1982.02.26
申请号	FR19780006832	申请日期	1978.03.09
申请人	MATERIEL TELEPHONIQUE	发明人
分类号	G09B9/28;(IPC1-7):G06G7/72	主分类号	G09B9/28
代理机构		代理人
主权项
地址

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