électrode collectrice pour tubes à décharge électronique,申请号FRD1187520-传众专利搜索

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发明名称	électrode collectrice pour tubes à décharge électronique
摘要
申请公布号	FR1187520(A)	申请公布日期	1959.09.11
申请号	FRD1187520	申请日期	1957.12.05
申请人	ENGLISH ELECTRIC VALVE COMPANY LIMITED	发明人
分类号	H01J23/027	主分类号	H01J23/027
代理机构		代理人
主权项
地址

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