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公开(公告)号：US1960439A
公开(公告)日：1934-05-29
申请号：US41874230
申请日：1930-01-06
Applicant: LORENZ C AG
Inventor： WALTER HAHNEMANN
CPC classification number: B63B45/00 , B63B49/00 , B63B2201/16 , G01S1/02 , G08G3/02 , G08G5/0026 , G08G5/0086
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