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公开(公告)号：US2259393A
公开(公告)日：1941-10-14
申请号：US24760638
申请日：1938-12-24
Applicant: TELEFUNKEN GMBH
Inventor： OTTO ROOSENSTEIN HANS , ERNST REIMANN
IPC: H04N5/74
CPC classification number: H04N9/3141
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