Improvements in or relating to indirectly heated cathode structures for electron discharge devices,申请号GB19390025426-传众专利搜索

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发明名称	Improvements in or relating to indirectly heated cathode structures for electron discharge devices
摘要
申请公布号	GB534575(A)	申请公布日期	1941.03.11
申请号	GB19390025426	申请日期	1939.09.08
申请人	STANDARD TELEPHONES AND CABLES LIMITED;FRANK DOUGLAS GOODCHILD	发明人
分类号	H01J1/22	主分类号	H01J1/22
代理机构		代理人
主权项
地址

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