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发明名称
摘要
申请公布号
DE2123686(A1)
申请公布日期
1971.12.09
申请号
DE19712123686
申请日期
1971.05.13
申请人
BURROUGHS CORP
发明人
分类号
H01J17/49;(IPC1-7):H01J61/64
主分类号
H01J17/49
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