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公开(公告)号：US2188679A
公开(公告)日：1940-01-30
申请号：US27616039
申请日：1939-05-27
Applicant: BAIRD TELEVISION LTD
Inventor： GEORGE DOVASTON , GORDON GRAHAM GEORGE EDWARD
IPC: H04N5/257
CPC classification number: H04N5/257
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