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发明名称
摘要
申请公布号	FR2241175(B2)	申请公布日期	1978.03.24
申请号	FR19740026543	申请日期	1974.07.31
申请人	INTERNAL STANDARD ELECTRIC CORP	发明人
分类号	H04Q1/457;(IPC1-7):H04Q1/45;G01R23/10	主分类号	H04Q1/457
代理机构		代理人
主权项
地址

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