Improvements in or relating to communication systems and apparatus,申请号GB19440009748-传众专利搜索

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发明名称	Improvements in or relating to communication systems and apparatus
摘要
申请公布号	GB592797(A)	申请公布日期	1947.09.30
申请号	GB19440009748	申请日期	1944.05.19
申请人	THE NATIONAL CASH REGISTER COMPANY	发明人
分类号	H04B14/02	主分类号	H04B14/02
代理机构		代理人
主权项
地址

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