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发明名称
Improvements in or relating to thermionic valve amplifiers
摘要
申请公布号
GB515583(A)
申请公布日期
1939.12.08
申请号
GB19380016894
申请日期
1938.06.07
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H03F1/36
主分类号
H03F1/36
代理机构
代理人
主权项
地址
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