Perfectionnements aux tubes à décharge électrique,申请号FRD947295-传众专利搜索

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发明名称	Perfectionnements aux tubes à décharge électrique
摘要
申请公布号	FR947295(A)	申请公布日期	1949.06.28
申请号	FRD947295	申请日期	1947.05.29
申请人	COMPAGNIE DES LAMPES	发明人
分类号	H01J5/50;H01J19/50	主分类号	H01J5/50
代理机构		代理人
主权项
地址

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