Improvements in or relating to cross-bar switches for use in automatic telephone systems,申请号GB19470031227-传众专利搜索

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发明名称	Improvements in or relating to cross-bar switches for use in automatic telephone systems
摘要
申请公布号	GB647506(A)	申请公布日期	1950.12.13
申请号	GB19470031227	申请日期	1947.11.25
申请人	N.V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H01H67/26	主分类号	H01H67/26
代理机构		代理人
主权项
地址

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