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经营范围
发明名称
Electron Spectrometer
摘要
申请公布号
USRE33275(E)
申请公布日期
1990.07.24
申请号
US19890409440
申请日期
1989.09.18
申请人
发明人
分类号
G01N23/225;H01J37/252;H01J37/26;H01J49/46;H01J49/48
主分类号
G01N23/225
代理机构
代理人
主权项
地址
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