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发明名称
Cathode construction
摘要
申请公布号
US2367331(A)
申请公布日期
1945.01.16
申请号
US19410422054
申请日期
1941.12.08
申请人
GENERAL ELECTRIC COMPANY
发明人
BONDLEY RALPH J.
分类号
H01J1/20
主分类号
H01J1/20
代理机构
代理人
主权项
地址
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