Perfectionnements aux tubes lumineux à décharge thermoionique,申请号FRD739874-传众专利搜索

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发明名称	Perfectionnements aux tubes lumineux à décharge thermoionique
摘要
申请公布号	FR739874(A)	申请公布日期	1933.01.18
申请号	FRD739874	申请日期	1932.07.11
申请人	COMPAGNIE DES LAMPES	发明人
分类号	H01J61/10	主分类号	H01J61/10
代理机构		代理人
主权项
地址

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