RINGBACK TONE TRANSMISSION SYSTEM,申请号JP19890093418-传众专利搜索

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发明名称	RINGBACK TONE TRANSMISSION SYSTEM
摘要
申请公布号	JPH02271777(A)	申请公布日期	1990.11.06
申请号	JP19890093418	申请日期	1989.04.12
申请人	NEC CORP	发明人	SUDO KIYOSHI
分类号	H04Q3/545;H04M19/02;H04Q3/42	主分类号	H04Q3/545
代理机构		代理人
主权项
地址

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