Electron discharge device,申请号GB19420015291-传众专利搜索

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发明名称	Electron discharge device
摘要
申请公布号	GB560959(A)	申请公布日期	1944.04.28
申请号	GB19420015291	申请日期	1942.10.30
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY, LIMITED	发明人
分类号	H01J25/12	主分类号	H01J25/12
代理机构		代理人
主权项
地址

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