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发明名称
摘要
申请公布号
JPS4980793(U)
申请公布日期
1974.07.12
申请号
JP19720125749U
申请日期
1972.10.31
申请人
发明人
分类号
G01N23/225;H01J37/24;H01J37/244;(IPC1-7):G01N23/225
主分类号
G01N23/225
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代理人
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