Helix type traveling wave tube structure with supporting rods covered with boron nitride or artificial diamond,申请号US19920861547-传众专利搜索

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发明名称	Helix type traveling wave tube structure with supporting rods covered with boron nitride or artificial diamond
摘要
申请公布号	US5274304(A)	申请公布日期	1993.12.28
申请号	US19920861547	申请日期	1992.04.01
申请人	NEC CORPORATION	发明人	NISHIDA, KAZUHISA
分类号	H01J23/26;(IPC1-7):H01J23/24	主分类号	H01J23/26
代理机构		代理人
主权项
地址

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