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发明名称
摘要
申请公布号
JPS553641(Y2)
申请公布日期
1980.01.28
申请号
JP19740129999U
申请日期
1974.10.29
申请人
发明人
分类号
G09F9/00;G09F9/30;G09F9/313;H01J17/48;H01J17/49;H01J31/00
主分类号
G09F9/00
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