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经营范围
发明名称
Perfectionnements aux amplificateurs à lampes comportant un réglage dynamique des amplitudes
摘要
申请公布号
FR810951(A)
申请公布日期
1937.04.03
申请号
FRD810951
申请日期
1936.09.18
申请人
TELEFUNKEN GESELLSCHAFT FU:R DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
分类号
H03G9/10
主分类号
H03G9/10
代理机构
代理人
主权项
地址
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