Improvements in wireless signalling devices,申请号GB19410010426-传众专利搜索

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发明名称	Improvements in wireless signalling devices
摘要
申请公布号	GB550430(A)	申请公布日期	1943.01.07
申请号	GB19410010426	申请日期	1941.08.15
申请人	R.A. ROTHERMEL LIMITED;FRANK STANLEY SPOONER WATES;INTERNATIONAL MARINE RADIO COMPANY LIMITED;WILLIAM HUGH MCALLISTER	发明人
分类号	H04L15/22	主分类号	H04L15/22
代理机构		代理人
主权项
地址

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