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发明名称
ELECTRON BEAM SOURCE AND ELECTRON BEAM DEVICE
摘要
申请公布号
JPH1154023(A)
申请公布日期
1999.02.26
申请号
JP19970205969
申请日期
1997.07.31
申请人
RICOH CO LTD
发明人
TAKAHASHI JUNICHI
分类号
H04N5/228;H01J1/30;H01J1/304;H01J31/12;H04N5/68;H04N9/12;(IPC1-7):H01J1/30
主分类号
H04N5/228
代理机构
代理人
主权项
地址
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