Line interface circuit,申请号US19870100048-传众专利搜索

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发明名称	Line interface circuit
摘要
申请公布号	US4829567(A)	申请公布日期	1989.05.09
申请号	US19870100048	申请日期	1987.09.23
申请人	NORTHERN TELECOM LIMITED	发明人	MOISIN, MIHAIL S. A. T.
分类号	H04Q3/42;H04M19/00	主分类号	H04Q3/42
代理机构		代理人
主权项
地址

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