Perfectionnements aux membranes de haut-parleurs,申请号FRD848588-传众专利搜索

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发明名称	Perfectionnements aux membranes de haut-parleurs
摘要
申请公布号	FR848588(A)	申请公布日期	1939.11.02
申请号	FRD848588	申请日期	1939.01.09
申请人	TELEFUNKEN GESELLSCHAFT FU:R DRAHTLOSE TELEGRAPHIE M.B.H.	发明人
分类号	H04R7/12	主分类号	H04R7/12
代理机构		代理人
主权项
地址

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