CALL SIGNAL LOOPING BACK TRUNK CIRCUIT,申请号JP19880247947-传众专利搜索

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发明名称	CALL SIGNAL LOOPING BACK TRUNK CIRCUIT
摘要
申请公布号	JPH0295069(A)	申请公布日期	1990.04.05
申请号	JP19880247947	申请日期	1988.09.30
申请人	NEC CORP	发明人	KINOSHITA TOSHIMASA;YAMATO OSAMU
分类号	H04M3/32	主分类号	H04M3/32
代理机构		代理人
主权项
地址

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