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发明名称
Fokussierung eines Elektronenstrahls.
摘要
申请公布号
DE69011908(T2)
申请公布日期
1995.03.23
申请号
DE19906011908T
申请日期
1990.02.14
申请人
HITACHI, LTD., TOKIO/TOKYO, JP
发明人
KANDA, KIMIO, KATSUTA-SHI, IBARAKI 312, JP
分类号
H01J37/04;H01J37/153;H01J37/21;(IPC1-7):H01J37/21
主分类号
H01J37/04
代理机构
代理人
主权项
地址
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