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发明名称	KEY TELEPHONE SYSTEM
摘要
申请公布号	JPH0294992(A)	申请公布日期	1990.04.05
申请号	JP19880246882	申请日期	1988.09.30
申请人	KANDA TSUSHIN KOGYO CO LTD;NIPPON TELEGR & TELEPH CORP <NTT>	发明人	OBA NAOKI;NAGASAKI YOSHIO;SHINOHARA SHINICHI;YAMAMOTO KAZUYUKI
分类号	H04M1/00;H04M1/82;H04Q3/58	主分类号	H04M1/00
代理机构		代理人
主权项
地址

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