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发明名称
Improvements in or relating to velocity modulated electron discharge devices
摘要
申请公布号
GB582485(A)
申请公布日期
1946.11.19
申请号
GB19410015345
申请日期
1941.11.28
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
分类号
H01J25/12
主分类号
H01J25/12
代理机构
代理人
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地址
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