Grille refroidie pour tube électronique,申请号FRD754967-传众专利搜索

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发明名称	Grille refroidie pour tube électronique
摘要
申请公布号	FR754967(A)	申请公布日期	1933.11.17
申请号	FRD754967	申请日期	1933.04.29
申请人	THE M-O VALVE COMPANY LIMITED	发明人
分类号	H01J19/36	主分类号	H01J19/36
代理机构		代理人
主权项
地址

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