TELEPHONE EXCHANGE SYSTEM,申请号JP19890100486-传众专利搜索

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发明名称	TELEPHONE EXCHANGE SYSTEM
摘要
申请公布号	JPH02278951(A)	申请公布日期	1990.11.15
申请号	JP19890100486	申请日期	1989.04.19
申请人	NEC CORP	发明人	MAEKAWA SATOSHI
分类号	H04M3/42	主分类号	H04M3/42
代理机构		代理人
主权项
地址

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