METHOD AND APPARATUS FOR AUTOMATICALLY FOCUSING AN ELECTRON BEAM IN A SCANNING BEAM DEVICE,申请号GB19780039251-传众专利搜索

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发明名称	METHOD AND APPARATUS FOR AUTOMATICALLY FOCUSING AN ELECTRON BEAM IN A SCANNING BEAM DEVICE
摘要
申请公布号	GB2007394(A)	申请公布日期	1979.05.16
申请号	GB19780039251	申请日期	1978.10.04
申请人	NIHON DENSHI KK	发明人
分类号	H01J37/21;H01J37/28;(IPC1-7):G05D3/00;H01J37/30	主分类号	H01J37/21
代理机构		代理人
主权项
地址

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