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经营范围
发明名称
Ultra high frequency electron discharge device having elongated electrodes
摘要
申请公布号
US2481026(A)
申请公布日期
1949.09.06
申请号
US19440549513
申请日期
1944.08.15
申请人
RADIO CORPORATION
发明人
LAW RUSSELL R.;PENSAK LOUIS
分类号
H01J21/06
主分类号
H01J21/06
代理机构
代理人
主权项
地址
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