Improvements in or relating to electron discharge devices of the travelling wave type,申请号GB19560023595-传众专利搜索

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发明名称	Improvements in or relating to electron discharge devices of the travelling wave type
摘要
申请公布号	GB772003(A)	申请公布日期	1957.04.10
申请号	GB19560023595	申请日期	1954.03.23
申请人	WESTERN ELECTRICAL COMPANY	发明人
分类号	H01J25/40	主分类号	H01J25/40
代理机构		代理人
主权项
地址

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