Improvements in or relating to permanent magnets,申请号GB19320011265-传众专利搜索

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发明名称	Improvements in or relating to permanent magnets
摘要
申请公布号	GB395118(A)	申请公布日期	1933.07.13
申请号	GB19320011265	申请日期	1932.04.20
申请人	ENGLISH STEEL CORPORATION LIMITED;JOHN CAREY SWAN	发明人
分类号	H04R9/02	主分类号	H04R9/02
代理机构		代理人
主权项
地址

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