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发明名称
摘要
申请公布号
JPH0439646(Y2)
申请公布日期
1992.09.17
申请号
JP19850038284U
申请日期
1985.03.19
申请人
发明人
分类号
H01J1/28;(IPC1-7):H01J1/28
主分类号
H01J1/28
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代理人
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