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发明名称
摘要
申请公布号
JPS5721254(Y2)
申请公布日期
1982.05.08
申请号
JP19760007107U
申请日期
1976.01.23
申请人
发明人
分类号
H01J31/20;H01J9/20;H01J29/07;H01J29/32;H01J29/86;(IPC1-7):H01J29/32
主分类号
H01J31/20
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代理人
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