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发明名称
Verstärkerröhre mit Metallwand.
摘要
申请公布号
CH193752(A)
申请公布日期
1937.10.31
申请号
CHD193752
申请日期
1936.07.28
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M. B. H.
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主分类号
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