Improvements in or relating to telephone systems,申请号GB19340027178-传众专利搜索

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发明名称	Improvements in or relating to telephone systems
摘要
申请公布号	GB422042(A)	申请公布日期	1935.01.03
申请号	GB19340027178	申请日期	1934.09.21
申请人	C. LORENZ AKTIENGESELLSCHAFT	发明人
分类号	H04M7/08	主分类号	H04M7/08
代理机构		代理人
主权项
地址

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