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发明名称
摘要
申请公布号
NL6700242(A)
申请公布日期
1968.07.08
申请号
NL19670000242
申请日期
1967.01.06
申请人
发明人
分类号
H01J19/46;H01J29/04;H01J29/48
主分类号
H01J19/46
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代理人
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地址
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