Perfectionnements apportés aux haut-parleurs électrodynamiques,申请号FRD1052050-传众专利搜索

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发明名称	Perfectionnements apportés aux haut-parleurs électrodynamiques
摘要
申请公布号	FR1052050(A)	申请公布日期	1954.01.20
申请号	FRD1052050	申请日期	1952.03.04
申请人		发明人	MERCIER EUGENE-FREDERIC
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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