ISDN LINE MONITOR SYSTEM,申请号JP19890312473-传众专利搜索

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发明名称	ISDN LINE MONITOR SYSTEM
摘要
申请公布号	JPH03173257(A)	申请公布日期	1991.07.26
申请号	JP19890312473	申请日期	1989.12.01
申请人	NEC CORP	发明人	FUJIOKA MASAHITO
分类号	H04M3/22;H04Q3/42	主分类号	H04M3/22
代理机构		代理人
主权项
地址

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