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发明名称
Improvements in or relating to electron discharge tubes
摘要
申请公布号
GB458169(A)
申请公布日期
1935.11.16
申请号
GB19350006945
申请日期
1935.03.05
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J31/04
主分类号
H01J31/04
代理机构
代理人
主权项
地址
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