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发明名称
摘要
申请公布号
JPS63194454(U)
申请公布日期
1988.12.14
申请号
JP19870085776U
申请日期
1987.06.03
申请人
发明人
分类号
H01J9/18;(IPC1-7):H01J9/18
主分类号
H01J9/18
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代理人
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地址
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