PRIVATE BRANCH EXCHANGE SYSTEM,申请号JP19910319974-传众专利搜索

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发明名称	PRIVATE BRANCH EXCHANGE SYSTEM
摘要
申请公布号	JPH05130661(A)	申请公布日期	1993.05.25
申请号	JP19910319974	申请日期	1991.11.07
申请人	CANON INC	发明人	OBA HIDEO
分类号	H04Q3/58;H04M3/42	主分类号	H04Q3/58
代理机构		代理人
主权项
地址

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