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发明名称
摘要
申请公布号
JPS5718300(B2)
申请公布日期
1982.04.15
申请号
JP19770090206
申请日期
1977.07.27
申请人
发明人
分类号
H01J31/08;H01J9/20;H01J29/10;H01J29/39;H01J31/12
主分类号
H01J31/08
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