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经营范围
发明名称
Elektronenröhrenanordnung mit regelbarer Steilheit.
摘要
申请公布号
CH170636(A)
申请公布日期
1934.07.15
申请号
CHD170636
申请日期
1933.09.25
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M. B. H.
分类号
主分类号
代理机构
代理人
主权项
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