An improved gyroscopic device,申请号GB19290012657-传众专利搜索

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发明名称	An improved gyroscopic device
摘要
申请公布号	GB331956(A)	申请公布日期	1930.07.17
申请号	GB19290012657	申请日期	1929.04.23
申请人	GUSTAF HENRIK FABIAN BERGLUND	发明人
分类号	G01C19/38	主分类号	G01C19/38
代理机构		代理人
主权项
地址

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