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发明名称
摘要
申请公布号
JPS5054956(U)
申请公布日期
1975.05.24
申请号
JP19730109728U
申请日期
1973.09.19
申请人
发明人
分类号
H01J1/88;H01J29/02;H01J29/48;(IPC1-7):H01J1/88
主分类号
H01J1/88
代理机构
代理人
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