KEY TELEPHONE SYSTEM,申请号JP19890084538-传众专利搜索

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发明名称	KEY TELEPHONE SYSTEM
摘要
申请公布号	JPH02262794(A)	申请公布日期	1990.10.25
申请号	JP19890084538	申请日期	1989.04.03
申请人	CANON INC	发明人	OZAWA ISAMU
分类号	H04Q3/58;(IPC1-7):H04Q3/58	主分类号	H04Q3/58
代理机构		代理人
主权项
地址

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