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1.发明授权
公开(公告)号：US3283391A
公开(公告)日：1966-11-08
申请号：US41653864
申请日：1964-12-07
Applicant: INGRAHAM COMPANY
Inventor： THOMPSON NORMAN F , CYBULSKI EDWARD B
IPC: B23B13/00
CPC classification number: B23B13/00 , Y10T29/5125 , Y10T82/2514 , Y10T82/2516 , Y10T82/2518 , Y10T408/175 , Y10T408/54
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