Telephone systems with a main exchange and a satellite exchange,申请号GB19530008530-传众专利搜索

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发明名称	Telephone systems with a main exchange and a satellite exchange
摘要
申请公布号	GB767397(A)	申请公布日期	1957.02.06
申请号	GB19530008530	申请日期	1953.03.27
申请人	LICENTIA PATENT-VERWALTUNGS-G.M.B.H.	发明人
分类号	H01J5/18;H01J35/18;H04Q3/00	主分类号	H01J5/18
代理机构		代理人
主权项
地址

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