Improvements in cathode sleeves for thermionic valves and method of making the same,申请号GB19400015763-传众专利搜索

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发明名称	Improvements in cathode sleeves for thermionic valves and method of making the same
摘要
申请公布号	GB544822(A)	申请公布日期	1942.04.29
申请号	GB19400015763	申请日期	1940.10.28
申请人	HENRY KERSHAW	发明人
分类号	H01J1/26	主分类号	H01J1/26
代理机构		代理人
主权项
地址

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