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经营范围
发明名称
Radio direction finder
摘要
申请公布号
US2406637(A)
申请公布日期
1946.08.27
申请号
US19420426372
申请日期
1942.01.12
申请人
UNITED AIR LINES, INC.
发明人
SANDRETTO PETER C.;BUCKTHAL ELMER P.
分类号
G01S1/02;G01S19/15;G01S19/48;G01S19/49
主分类号
G01S1/02
代理机构
代理人
主权项
地址
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