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公开(公告)号：US957224A
公开(公告)日：1910-05-10
申请号：US1909519709
申请日：1909-09-27
Applicant: DAVIS SEWING MACHINE COMPANY
Inventor： LESTER HARRY BURDETT
CPC classification number: B23Q5/34 , Y10T29/5125 , Y10T82/2541
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