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发明名称
Improvements in or relating to high frequency electron tubes
摘要
申请公布号
GB1044476(A)
申请公布日期
1966.09.28
申请号
GB19640023739
申请日期
1964.06.08
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
分类号
H01J23/075
主分类号
H01J23/075
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