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发明名称
摘要
申请公布号	FR2195142(B1)	申请公布日期	1978.12.29
申请号	FR19730027875	申请日期	1973.07.30
申请人	WESTERN ELECTRIC CY INC	发明人
分类号	H04J3/00;H04J3/20;H04M3/56;H04Q11/04;(IPC1-7):H04Q11/04	主分类号	H04J3/00
代理机构		代理人
主权项
地址

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