Improvements relating to electro-dynamic propulsion,申请号GB19320009198-传众专利搜索

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发明名称	Improvements relating to electro-dynamic propulsion
摘要
申请公布号	GB398917(A)	申请公布日期	1933.09.28
申请号	GB19320009198	申请日期	1932.03.30
申请人	FRANK BLAKE HOPEWELL	发明人
分类号	H02K41/025	主分类号	H02K41/025
代理机构		代理人
主权项
地址

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