PRE-COMPENSATION SYSTEM FOR RINGING,申请号JP19890331305-传众专利搜索

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发明名称	PRE-COMPENSATION SYSTEM FOR RINGING
摘要
申请公布号	JPH03192974(A)	申请公布日期	1991.08.22
申请号	JP19890331305	申请日期	1989.12.22
申请人	HITACHI LTD	发明人	ONISHI MAKOTO
分类号	H04N5/14;H04N5/21	主分类号	H04N5/14
代理机构		代理人
主权项
地址

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