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公开(公告)号：US2015570A
公开(公告)日：1935-09-24
申请号：US49929730
申请日：1930-12-01
Applicant: GEN ELECTRIC
Inventor： SABBAH CAMIL A , GRAY PAUL M
CPC classification number: H04N5/84 , H01J29/00 , H01J29/94 , H01J31/065
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