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发明名称	KEY TELEPHONE SYSTEM
摘要
申请公布号	JPH01194558(A)	申请公布日期	1989.08.04
申请号	JP19880016878	申请日期	1988.01.29
申请人	NEC CORP	发明人	YOSHINO KUMIKO
分类号	H04M3/54	主分类号	H04M3/54
代理机构		代理人
主权项
地址

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