Perfectionnements aux haut-parleurs électrostatiques,申请号FRD1134837-传众专利搜索

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发明名称	Perfectionnements aux haut-parleurs électrostatiques
摘要
申请公布号	FR1134837(A)	申请公布日期	1957.04.18
申请号	FRD1134837	申请日期	1955.07.18
申请人	FERRANTI LIMITED	发明人	WALKER PETER JAMES
分类号	H04R19/02	主分类号	H04R19/02
代理机构		代理人
主权项
地址

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