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发明名称
Electron discharge device
摘要
申请公布号
US2252580(A)
申请公布日期
1941.08.12
申请号
US19390263604
申请日期
1939.03.23
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
ROTHE HORST;KLEEN WERNER
分类号
H01J19/00
主分类号
H01J19/00
代理机构
代理人
主权项
地址
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