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发明名称
摘要
申请公布号
JPS57127457(U)
申请公布日期
1982.08.09
申请号
JP19810014032U
申请日期
1981.02.03
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发明人
分类号
H01J9/42;(IPC1-7):H01J9/42
主分类号
H01J9/42
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