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发明名称
Electron discharge tube
摘要
申请公布号
US2443535(A)
申请公布日期
1948.06.15
申请号
US19430513539
申请日期
1943.12.09
申请人
SYLVANIA ELECTRIC PRODUCTS, INC.
发明人
HAAS PAUL
分类号
H01J25/24
主分类号
H01J25/24
代理机构
代理人
主权项
地址
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