Grossflaechen-Lautsprecher-Membran in Kegelform,申请号DE1925I026337D-传众专利搜索

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发明名称	Grossflaechen-Lautsprecher-Membran in Kegelform
摘要
申请公布号	DE556082(C)	申请公布日期	1932.08.04
申请号	DE1925I026337D	申请日期	1925.06.28
申请人	INTERNATIONAL STANDARD ELECTRIC CORPORATION	发明人
分类号	H04R7/06;H04R7/12	主分类号	H04R7/06
代理机构		代理人
主权项
地址

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