Perfectionnements aux tubes à luminescence électrique,申请号FRD700294-传众专利搜索

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发明名称	Perfectionnements aux tubes à luminescence électrique
摘要
申请公布号	FR700294(A)	申请公布日期	1931.02.26
申请号	FRD700294	申请日期	1930.07.08
申请人	FLEXLUME CORPORATION	发明人
分类号	H01J61/04	主分类号	H01J61/04
代理机构		代理人
主权项
地址

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