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经营范围
发明名称
Frequency selective transmission line
摘要
申请公布号
US2274346(A)
申请公布日期
1942.02.24
申请号
US19380248804
申请日期
1938.12.31
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
ROOSENSTEIN HANS OTTO
分类号
H01P1/202
主分类号
H01P1/202
代理机构
代理人
主权项
地址
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