Improvements in or relating to apparatus for regulating the gas or vapour pressure in electron-discharge vessels,申请号GB19380023623-传众专利搜索

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发明名称	Improvements in or relating to apparatus for regulating the gas or vapour pressure in electron-discharge vessels
摘要
申请公布号	GB508821(A)	申请公布日期	1939.07.06
申请号	GB19380023623	申请日期	1938.08.10
申请人	OTTO BORMANN	发明人
分类号	H01J13/32	主分类号	H01J13/32
代理机构		代理人
主权项
地址

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