Split-switch crossbar trunking system,申请号US19630279856-传众专利搜索

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发明名称	Split-switch crossbar trunking system
摘要
申请公布号	US3313888(A)	申请公布日期	1967.04.11
申请号	US19630279856	申请日期	1963.05.13
申请人	HITACHI LIMITED	发明人	OHNO TORU
分类号	H04Q3/00	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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