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发明名称
Electric discharge tube of the kind comprising an indirectly heated cathode
摘要
申请公布号
US2593856(A)
申请公布日期
1952.04.22
申请号
US19490076884
申请日期
1949.02.17
申请人
HARTFORD NATIONAL BANK AND TRUST COMPANY
发明人
WEYER HENRICUS JOHANNES DE
分类号
H01J1/22
主分类号
H01J1/22
代理机构
代理人
主权项
地址
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