Beam centering device for cathode-ray tubes,申请号US19480028315-传众专利搜索

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发明名称	Beam centering device for cathode-ray tubes
摘要
申请公布号	US2513929(A)	申请公布日期	1950.07.04
申请号	US19480028315	申请日期	1948.05.21
申请人	GENERAL ELECTRIC COMPANY	发明人	GETHMANN RICHARD B.
分类号	H01J29/54	主分类号	H01J29/54
代理机构		代理人
主权项
地址

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