TRANSMISSION SYSTEM FOR RINGING SIGNAL,申请号JP19860179953-传众专利搜索

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发明名称	TRANSMISSION SYSTEM FOR RINGING SIGNAL
摘要
申请公布号	JPS6337750(A)	申请公布日期	1988.02.18
申请号	JP19860179953	申请日期	1986.08.01
申请人	HITACHI LTD	发明人	HASHIMOTO MAKOTO
分类号	H04M3/02	主分类号	H04M3/02
代理机构		代理人
主权项
地址

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