Dual focus cathode-ray tubes,申请号US19530352239-传众专利搜索

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发明名称	Dual focus cathode-ray tubes
摘要
申请公布号	US2747134(A)	申请公布日期	1956.05.22
申请号	US19530352239	申请日期	1953.04.30
申请人	RADIO CORPORATION OF AMERICA	发明人	ALLWINE HARRISON S.
分类号	H01J29/46;H01J31/20	主分类号	H01J29/46
代理机构		代理人
主权项
地址

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