Improvements in or relating to electron discharge apparatus,申请号GB19390026667-传众专利搜索

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发明名称	Improvements in or relating to electron discharge apparatus
摘要
申请公布号	GB532920(A)	申请公布日期	1941.02.03
申请号	GB19390026667	申请日期	1939.09.26
申请人	STANDARD TELEPHONES AND CABLES LIMITED;DEREK SEATON BUTLER SHANNON;PRAFULLA KUMAR CHATTERJEA	发明人
分类号	H01J43/02	主分类号	H01J43/02
代理机构		代理人
主权项
地址

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