Velocity modulation electron discharge device,申请号GB19580018149-传众专利搜索

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发明名称	Velocity modulation electron discharge device
摘要
申请公布号	GB887195(A)	申请公布日期	1962.01.17
申请号	GB19580018149	申请日期	1958.06.06
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人
分类号	H01J25/12;H01J25/24	主分类号	H01J25/12
代理机构		代理人
主权项
地址

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