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公开(公告)号:US10519610B2
公开(公告)日:2019-12-31
申请号:US15690002
申请日:2017-08-29
申请人: L. B. Foster Company
发明人: Korhan Ciloglu , William Mohr , David Workman
摘要: A railroad rail comprising a rail head, wherein the rail head is made from a first material and defines a void, and an insert comprising a second material installed in the void.