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经营范围
发明名称
Elektronenröhre mit Spannungsnetz.
摘要
申请公布号
AT136156(B)
申请公布日期
1934.01.10
申请号
ATD136156
申请日期
1932.07.11
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
分类号
主分类号
代理机构
代理人
主权项
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