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1.发明授权
公开(公告)号：US2263377A
公开(公告)日：1941-11-18
申请号：US23396638
申请日：1938-10-08
Applicant: INT STANDARD ELECTRIC CORP
Inventor： GASTON BUSIGNIES HENRI , FERNAND BAC
IPC: G01S1/02
CPC classification number: G01S1/02
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