Perfectionnements à la fabrication des tubes électroniques,申请号FRD1110177-传众专利搜索

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发明名称	Perfectionnements à la fabrication des tubes électroniques
摘要
申请公布号	FR1110177(A)	申请公布日期	1956.02.07
申请号	FRD1110177	申请日期	1954.10.19
申请人	ELECTRIC & MUSICAL INDUSTRIES LIMITED	发明人
分类号	H01J9/24;H01J9/39	主分类号	H01J9/24
代理机构		代理人
主权项
地址

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