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发明名称
摘要
申请公布号
JPS4428419(Y1)
申请公布日期
1969.11.26
申请号
JP19660012902U
申请日期
1966.02.16
申请人
发明人
分类号
H01J29/48;H01J29/50;H01J31/20;(IPC1-7):H01J29/48
主分类号
H01J29/48
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