EXTENSION CALLING SYSTEM IN KEY TELEPHONE SYSTEM,申请号JP19870232535-传众专利搜索

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发明名称	EXTENSION CALLING SYSTEM IN KEY TELEPHONE SYSTEM
摘要
申请公布号	JPS6477294(A)	申请公布日期	1989.03.23
申请号	JP19870232535	申请日期	1987.09.18
申请人	NITSUKO CORP	发明人	KUMAGAI FUMITO
分类号	H04Q3/58	主分类号	H04Q3/58
代理机构		代理人
主权项
地址

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