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经营范围
发明名称
Tube and base structure
摘要
申请公布号
US2383263(A)
申请公布日期
1945.08.21
申请号
US19440522170
申请日期
1944.02.12
申请人
ELECTRONS, INC.
发明人
KRUGER WILLIAM P.
分类号
H01J5/56
主分类号
H01J5/56
代理机构
代理人
主权项
地址
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