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经营范围
发明名称
Electron discharge tube
摘要
申请公布号
US1984897(A)
申请公布日期
1934.12.18
申请号
US19340705649
申请日期
1934.01.08
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
ROTHE HORST
分类号
H01J1/20;H01J19/50
主分类号
H01J1/20
代理机构
代理人
主权项
地址
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