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公开(公告)号：US2397584A
公开(公告)日：1946-04-02
申请号：US47426843
申请日：1943-02-01
Applicant: WICKWIRE SPENCER STEEL COMPANY
Inventor： HENRY AMBRUSON
CPC classification number: B65G15/54 , B65G15/48 , B65G2201/04 , H01J9/40
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