Automatic switching system applicable to telephony,申请号GB19450029292-传众专利搜索

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发明名称	Automatic switching system applicable to telephony
摘要
申请公布号	GB668261(A)	申请公布日期	1952.03.12
申请号	GB19450029292	申请日期	1945.11.05
申请人	COMPAGNIE GENERALE D'ELECTRICITE	发明人
分类号	H04Q3/42	主分类号	H04Q3/42
代理机构		代理人
主权项
地址

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