Lampes de t. s. f. à éléments protégés,申请号FRD676011-传众专利搜索

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发明名称	Lampes de t. s. f. à éléments protégés
摘要
申请公布号	FR676011(A)	申请公布日期	1930.02.18
申请号	FRD676011	申请日期	1929.05.31
申请人	ARCTURUS RADIO TUBE COMPANY	发明人
分类号	H01J19/42	主分类号	H01J19/42
代理机构		代理人
主权项
地址

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