Vorrichtung zur piezo-elektrischen Tonwiedergabe,申请号DE1951E003402-传众专利搜索

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发明名称	Vorrichtung zur piezo-elektrischen Tonwiedergabe
摘要
申请公布号	DE845569(C)	申请公布日期	1952.08.04
申请号	DE1951E003402	申请日期	1951.02.28
申请人	ELECTRIC & MUSICAL INDUSTRIES LIMITED	发明人	CHAMBERLAIN ALLAN GEOFFREY
分类号	H04R1/16;H04R17/04	主分类号	H04R1/16
代理机构		代理人
主权项
地址

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