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发明名称
Improvements in or relating to electric discharge tubes for short-wave working
摘要
申请公布号
GB719682(A)
申请公布日期
1954.12.08
申请号
GB19520024825
申请日期
1952.10.03
申请人
PHILIPS ELECTRICAL INDUSTRIES LIMITED
发明人
分类号
H01J21/36
主分类号
H01J21/36
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代理人
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