Elektromagnetische Einrichtung, insbesondere Schalldose,申请号DE1925W073494D-传众专利搜索

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发明名称	Elektromagnetische Einrichtung, insbesondere Schalldose
摘要
申请公布号	DE510142(C)	申请公布日期	1930.10.16
申请号	DE1925W073494D	申请日期	1925.07.31
申请人	ELECTRICAL RESEARCH PRODUCTS, INCORPORATED	发明人
分类号	G11B3/46;H04R11/08	主分类号	G11B3/46
代理机构		代理人
主权项
地址

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