Electron tube and method of making the same,申请号US19430514409-传众专利搜索

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发明名称	Electron tube and method of making the same
摘要
申请公布号	US2405915(A)	申请公布日期	1946.08.13
申请号	US19430514409	申请日期	1943.12.15
申请人	PHILCO CORPORATION	发明人	VANSANT JOHN S.
分类号	H01J21/04	主分类号	H01J21/04
代理机构		代理人
主权项
地址

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