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公开(公告)号：US2081776A
公开(公告)日：1937-05-25
申请号：US53853031
申请日：1931-05-19
Applicant: GEN ELECTRIC
Inventor： STRICKLAND ROYAL F , BLAKE HAROLD D , STURT MCLEAN
CPC classification number: H01J61/86 , H01J61/54 , H05B31/0027
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