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发明名称
Improvements in and relating to directive antenna systems
摘要
申请公布号
GB621839(A)
申请公布日期
1949.04.21
申请号
GB19440021413
申请日期
1944.11.01
申请人
SPERRY GYROSCOPE COMPANY, INC.
发明人
分类号
G01S1/02
主分类号
G01S1/02
代理机构
代理人
主权项
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