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发明名称
Elektronenröhrenverstärker mit Vorstufe
摘要
申请公布号
AT168368(B)
申请公布日期
1951.05.25
申请号
ATD168368
申请日期
1946.06.22
申请人
DIPL. ING. WALTHER HAMM
发明人
DIPL. ING. WALTHER HAMM
分类号
主分类号
代理机构
代理人
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