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公开(公告)号：US2375593A
公开(公告)日：1945-05-08
申请号：US48140643
申请日：1943-04-01
Applicant: RCA CORP
Inventor： SONTHEIMER CARL G , DOAK ROBETT S
IPC: H01Q7/06
CPC classification number: H01Q7/06
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