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经营范围
发明名称
Improvements in or relating to directional antenna
摘要
申请公布号
GB595837(A)
申请公布日期
1947.12.18
申请号
GB19440011290
申请日期
1944.06.13
申请人
UNITED AIR LINES, INC.
发明人
分类号
G01S3/08
主分类号
G01S3/08
代理机构
代理人
主权项
地址
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