Electron tube grid structure,申请号US19460642944-传众专利搜索

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发明名称	Electron tube grid structure
摘要
申请公布号	US2446271(A)	申请公布日期	1948.08.03
申请号	US19460642944	申请日期	1946.01.23
申请人	EITEL-MCCULLOUGH, INC.	发明人	EITEL WILLIAM W.
分类号	H01J19/38	主分类号	H01J19/38
代理机构		代理人
主权项
地址

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