Improvements in or relating to travelling wave tubes,申请号GB19570030858-传众专利搜索

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发明名称	Improvements in or relating to travelling wave tubes
摘要
申请公布号	GB798933(A)	申请公布日期	1958.07.30
申请号	GB19570030858	申请日期	1956.01.03
申请人		发明人
分类号	G01F23/20;H01J23/24	主分类号	G01F23/20
代理机构		代理人
主权项
地址

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