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发明名称
摘要
申请公布号
JPS63184545(U)
申请公布日期
1988.11.28
申请号
JP19870075142U
申请日期
1987.05.21
申请人
发明人
分类号
H01J9/22;(IPC1-7):H01J9/22
主分类号
H01J9/22
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代理人
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