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公开(公告)号：US2425063A
公开(公告)日：1947-08-05
申请号：US57728845
申请日：1945-02-10
Applicant: RCA CORP
Inventor： ALFRED KAHN , HARRIS CUTHBERT N
IPC: H04L25/03
CPC classification number: H04L25/03114
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