Perfectionnements apportés aux compas magnétiques,申请号FRD895000-传众专利搜索

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发明名称	Perfectionnements apportés aux compas magnétiques
摘要
申请公布号	FR895000(A)	申请公布日期	1945.01.11
申请号	FRD895000	申请日期	1943.05.27
申请人	CHARLES BIANCHETTI & COMPAGNIE	发明人
分类号	G01C17/00	主分类号	G01C17/00
代理机构		代理人
主权项
地址

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