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公开(公告)号：US2372648A
公开(公告)日：1945-04-03
申请号：US47243743
申请日：1943-01-15
Applicant: INGALLS IRON WORKS COMPANY
Inventor： LEON BESKIN
CPC classification number: E05F15/605 , E05F15/643 , E05F15/646 , E05Y2201/62 , E05Y2201/654
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