Vacuum tube structure,申请号GB19430016574-传众专利搜索

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发明名称	Vacuum tube structure
摘要
申请公布号	GB590500(A)	申请公布日期	1947.07.21
申请号	GB19430016574	申请日期	1943.10.09
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人
分类号	H01J19/34	主分类号	H01J19/34
代理机构		代理人
主权项
地址

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