Modulated beam-type electron tube apparatus,申请号US19540426530-传众专利搜索

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发明名称	Modulated beam-type electron tube apparatus
摘要
申请公布号	US2842742(A)	申请公布日期	1958.07.08
申请号	US19540426530	申请日期	1954.04.29
申请人	EITEL-MCCULLOUGH, INC.	发明人	PREIST DONALD H.
分类号	B01J23/72;B01J37/02;H01J25/12	主分类号	B01J23/72
代理机构		代理人
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