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公开(公告)号：US2978537A
公开(公告)日：1961-04-04
申请号：US46495554
申请日：1954-10-27
Applicant: DIAMOND POWER SPECIALITY
Inventor： KRUSE JR JOHN R , HUDSON ROBERT S
CPC classification number: H04N5/165 , H04N5/2352
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