Improvements in or relating to navigational devices,申请号GB19490009126-传众专利搜索

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发明名称	Improvements in or relating to navigational devices
摘要
申请公布号	GB665159(A)	申请公布日期	1952.01.16
申请号	GB19490009126	申请日期	1949.04.04
申请人	KELVIN & HUGHES LIMITED	发明人	EVERITT PHILIP FRANCIS
分类号	G01C21/02	主分类号	G01C21/02
代理机构		代理人
主权项
地址

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