Improvements in or relating to navigation of aircraft, ships or the like,申请号GB19400004436-传众专利搜索

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发明名称	Improvements in or relating to navigation of aircraft, ships or the like
摘要
申请公布号	GB540291(A)	申请公布日期	1941.10.13
申请号	GB19400004436	申请日期	1940.03.09
申请人	ARNOLD GRAVES;ALLTOOLS, LIMITED	发明人
分类号	G01C21/20	主分类号	G01C21/20
代理机构		代理人
主权项
地址

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