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发明名称
摘要
申请公布号
JPS5389157(U)
申请公布日期
1978.07.21
申请号
JP19760171212U
申请日期
1976.12.20
申请人
发明人
分类号
H01J1/20;H01J1/26;H01J29/04;(IPC1-7):H01J1/26
主分类号
H01J1/20
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代理人
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