Electromagnetic core construction and method of making same,申请号US19330663298-传众专利搜索

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发明名称	Electromagnetic core construction and method of making same
摘要
申请公布号	US2143811(A)	申请公布日期	1939.01.10
申请号	US19330663298	申请日期	1933.03.29
申请人	WICKERSHAM ELMER E	发明人	WICKERSHAM ELMER E.
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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