Agent d'élimination des gaz résiduels pour tubes à vide,申请号FRD818041-传众专利搜索

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发明名称	Agent d'élimination des gaz résiduels pour tubes à vide
摘要
申请公布号	FR818041(A)	申请公布日期	1937.09.16
申请号	FRD818041	申请日期	1937.02.18
申请人	RADIO CORPORATION OF AMERICA	发明人
分类号	H01J7/18	主分类号	H01J7/18
代理机构		代理人
主权项
地址

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