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发明名称
摘要
申请公布号
JPS4855684(A)
申请公布日期
1973.08.04
申请号
JP19710089776
申请日期
1971.11.12
申请人
发明人
分类号
H01J9/233;H01L31/10
主分类号
H01J9/233
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