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发明名称
Improvements in or relating to electron discharge devices and arrangements including such devices
摘要
申请公布号
GB544232(A)
申请公布日期
1942.04.02
申请号
GB19400014713
申请日期
1940.09.30
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY, LIMITED
发明人
分类号
H01J21/18
主分类号
H01J21/18
代理机构
代理人
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地址
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