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发明名称
Directional antenna system
摘要
申请公布号
US2205174(A)
申请公布日期
1940.06.18
申请号
US19380246769
申请日期
1938.12.20
申请人
RADIO CORPORATION
发明人
POSTHUMUS KLAAS
分类号
H01Q21/06
主分类号
H01Q21/06
代理机构
代理人
主权项
地址
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