Improvements in or relating to instruments for indicating bearings on maps,申请号GB19370034392-传众专利搜索

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发明名称	Improvements in or relating to instruments for indicating bearings on maps
摘要
申请公布号	GB504651(A)	申请公布日期	1939.04.28
申请号	GB19370034392	申请日期	1937.12.11
申请人	KARL WERNER	发明人
分类号	G09B29/10	主分类号	G09B29/10
代理机构		代理人
主权项
地址

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