SYSTEM FOR SWITCHING TIME DESIGNATION TRUNK LINES BY EXTENSIONS,申请号JP19890222987-传众专利搜索

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发明名称	SYSTEM FOR SWITCHING TIME DESIGNATION TRUNK LINES BY EXTENSIONS
摘要
申请公布号	JPH0388597(A)	申请公布日期	1991.04.12
申请号	JP19890222987	申请日期	1989.08.31
申请人	NEC ENG LTD	发明人	HIDAKA NAGAAKI
分类号	H04M3/42;H04Q3/58	主分类号	H04M3/42
代理机构		代理人
主权项
地址

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