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公开(公告)号：US2455071A
公开(公告)日：1948-11-30
申请号：US61289745
申请日：1945-08-27
Applicant: LEONE JOSEPH C
Inventor： LEONE JOSEPH C
IPC: B23B33/00
CPC classification number: B23B33/00 , Y10T82/262
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