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公开(公告)号：US2386960A
公开(公告)日：1945-10-16
申请号：US53445944
申请日：1944-05-06
Applicant: GEORGE JELLINEK
Inventor： GEORGE JELLINEK
CPC classification number: B23B31/06 , B23B31/201 , Y10T279/17529 , Y10T279/3481
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