Auxiliary service equipment for telegraph receivers,申请号GB19460012054-传众专利搜索

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发明名称	Auxiliary service equipment for telegraph receivers
摘要
申请公布号	GB628389(A)	申请公布日期	1949.08.29
申请号	GB19460012054	申请日期	1946.04.18
申请人	CREED AND COMPANY LIMITED	发明人
分类号	H04L13/06	主分类号	H04L13/06
代理机构		代理人
主权项
地址

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