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1.Wireless direction-finding means for and method of piloting aircraft 失效
Title translation: 无人机方向和驾驶飞行方法公开(公告)号:US1454592A
公开(公告)日:1923-05-08
申请号:US43571821
申请日:1921-01-07
Applicant: RCA CORP
Inventor: VELDE HAROLD ROBERT CORBY VAN , FU RNIVAL JOHN MEGARRY
CPC classification number: G01S1/02
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公开(公告)号:US1487498A
公开(公告)日:1924-03-18
申请号:US41920220
申请日:1920-10-25
Applicant: RCA CORP
CPC classification number: B65H75/4431 , B65H75/4442 , B65H2701/365 , B65H2701/537 , H01Q1/30
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