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发明名称
摘要
申请公布号
JPH03112864(U)
申请公布日期
1991.11.19
申请号
JP19900020961U
申请日期
1990.02.28
申请人
发明人
分类号
H01J61/76;(IPC1-7):H01J61/76
主分类号
H01J61/76
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代理人
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地址
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