Improvements in or relating to radio navigation systems,申请号GB19450021664-传众专利搜索

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发明名称	Improvements in or relating to radio navigation systems
摘要
申请公布号	GB620479(A)	申请公布日期	1949.03.25
申请号	GB19450021664	申请日期	1945.08.23
申请人	WILLIAM JOSEPH O'BRIEN	发明人
分类号	G01S1/02;G01S1/30	主分类号	G01S1/02
代理机构		代理人
主权项
地址

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