Electron tube circuits,申请号US19510259399-传众专利搜索

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发明名称	Electron tube circuits
摘要
申请公布号	US2645716(A)	申请公布日期	1953.07.14
申请号	US19510259399	申请日期	1951.12.01
申请人	WESTINGHOUSE AIR BRAKE COMPANY	发明人	MARTIN PAUL N.
分类号	H03K17/52	主分类号	H03K17/52
代理机构		代理人
主权项
地址

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