Improvements in or relating to electric telegraph systems,申请号GB19460034756-传众专利搜索

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发明名称	Improvements in or relating to electric telegraph systems
摘要
申请公布号	GB619122(A)	申请公布日期	1949.03.03
申请号	GB19460034756	申请日期	1946.11.22
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED	发明人
分类号	H04L27/14	主分类号	H04L27/14
代理机构		代理人
主权项
地址

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