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公开(公告)号：US3073893A
公开(公告)日：1963-01-15
申请号：US82910659
申请日：1959-07-23
Applicant: ZENITH RADIO CORP
Inventor： HERRMANN RICHARD C , CLAVIER PHILIPPE A
CPC classification number: H04L9/12 , H04L9/0637 , H04L2209/125
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