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发明名称
Improvements in or relating to electron discharge devices
摘要
申请公布号
GB481790(A)
申请公布日期
1938.03.16
申请号
GB19360016780
申请日期
1936.06.16
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY, LIMITED
发明人
分类号
H01J21/02;H01J31/14
主分类号
H01J21/02
代理机构
代理人
主权项
地址
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