Improvements in or relating to space-charge wave tubes,申请号GB19570038065-传众专利搜索

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发明名称	Improvements in or relating to space-charge wave tubes
摘要
申请公布号	GB867699(A)	申请公布日期	1961.05.10
申请号	GB19570038065	申请日期	1957.12.06
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人
分类号	H01J25/34;H01J25/48	主分类号	H01J25/34
代理机构		代理人
主权项
地址

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