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经营范围
发明名称
Traveling wave tube
摘要
申请公布号
US2669674(A)
申请公布日期
1954.02.16
申请号
US19490107287
申请日期
1949.07.28
申请人
HARTFORD NATIONAL BANK AND TRUST COMPANY
发明人
DIEMER GESINUS
分类号
H01J23/30
主分类号
H01J23/30
代理机构
代理人
主权项
地址
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