A telephone system with two-party connections,申请号GB19540008102-传众专利搜索

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发明名称	A telephone system with two-party connections
摘要
申请公布号	GB763145(A)	申请公布日期	1956.12.05
申请号	GB19540008102	申请日期	1954.03.19
申请人	LICENTIA PATENT-VERWALTUNGS-G.M.B.H.	发明人
分类号	H04Q5/00	主分类号	H04Q5/00
代理机构		代理人
主权项
地址

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