Planar electron tubes,申请号US19540424239-传众专利搜索

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发明名称	Planar electron tubes
摘要
申请公布号	US2814752(A)	申请公布日期	1957.11.26
申请号	US19540424239	申请日期	1954.04.19
申请人	SYLVANIA ELECTRIC PRODUCTS INC.	发明人	EVANS THOMAS L.
分类号	H01J1/20	主分类号	H01J1/20
代理机构		代理人
主权项
地址

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