SERVICE CHANNEL SIGNAL TRANSMISSION SYSTEM,申请号JP19890075546-传众专利搜索

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发明名称	SERVICE CHANNEL SIGNAL TRANSMISSION SYSTEM
摘要
申请公布号	JPH02253725(A)	申请公布日期	1990.10.12
申请号	JP19890075546	申请日期	1989.03.28
申请人	NEC CORP	发明人	ITO YOSHIO
分类号	H04L1/22;H04B1/74	主分类号	H04L1/22
代理机构		代理人
主权项
地址

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