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发明名称
摘要
申请公布号
JPS50147273(A)
申请公布日期
1975.11.26
申请号
JP19740053262
申请日期
1974.05.15
申请人
发明人
分类号
H01J9/04;H01J1/14;H01J1/15
主分类号
H01J9/04
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代理人
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