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发明名称
Directional antenna system
摘要
申请公布号
US2247666(A)
申请公布日期
1941.07.01
申请号
US19390287911
申请日期
1939.08.02
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
POTTER RALPH K.
分类号
H01Q3/22;H01Q3/30
主分类号
H01Q3/22
代理机构
代理人
主权项
地址
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