Electron gun for generating a hollow beam,申请号US19600060598-传众专利搜索

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发明名称	Electron gun for generating a hollow beam
摘要
申请公布号	US3130340(A)	申请公布日期	1964.04.21
申请号	US19600060598	申请日期	1960.10.05
申请人	TESLA, NARODNI PODNIK	发明人	KOZIAK ROMAN
分类号	H01J3/02	主分类号	H01J3/02
代理机构		代理人
主权项
地址

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