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发明名称
摘要
申请公布号
SE327468(B)
申请公布日期
1970.08.24
申请号
SE19680007213
申请日期
1968.05.29
申请人
NV PHILIPS
发明人
VAN ESDONK J;DE BOER T
分类号
H01J17/49;H01J19/00;H01J19/38;(IPC1-7):H01J17/48
主分类号
H01J17/49
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代理人
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