Pendular sighting device for aerial navigation,申请号GB19290002172-传众专利搜索

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发明名称	Pendular sighting device for aerial navigation
摘要
申请公布号	GB327777(A)	申请公布日期	1930.04.17
申请号	GB19290002172	申请日期	1929.01.22
申请人	THE STATE OF FRANCE	发明人
分类号	F28F3/08;G01C9/00	主分类号	F28F3/08
代理机构		代理人
主权项
地址

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