Circuit arrangement for telegraph exchange system,申请号GB19310000166-传众专利搜索

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发明名称	Circuit arrangement for telegraph exchange system
摘要
申请公布号	GB370041(A)	申请公布日期	1932.04.04
申请号	GB19310000166	申请日期	1931.01.02
申请人	C. LORENZ AKTIENGESELLSCHAFT	发明人
分类号	H04L12/04	主分类号	H04L12/04
代理机构		代理人
主权项
地址

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