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发明名称
摘要
申请公布号
DE2036684(A1)
申请公布日期
1971.01.28
申请号
DE19702036684
申请日期
1970.07.23
申请人
发明人
分类号
G02B5/20;H01J9/227;(IPC1-7):H01J29/32
主分类号
G02B5/20
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