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公开(公告)号：US2581060A
公开(公告)日：1952-01-01
申请号：US63464645
申请日：1945-12-13
Applicant: CARL P LEU , MARTIN A LEU , ADOLF A UNGER
Inventor： WOLD CLARENCE W
IPC: B23Q5/52
CPC classification number: B23Q5/52 , B23Q2705/24 , Y10T74/11 , Y10T82/20 , Y10T82/2535 , Y10T82/2572 , Y10T82/2574
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