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发明名称
摘要
申请公布号
JPS4885031(A)
申请公布日期
1973.11.12
申请号
JP19730009992
申请日期
1973.01.25
申请人
发明人
分类号
H01J29/76;H01J29/00;H01J29/02;H01J29/86;H01J29/92;H01J31/38
主分类号
H01J29/76
代理机构
代理人
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地址
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