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公开(公告)号：US2556163A
公开(公告)日：1951-06-12
申请号：US78351047
申请日：1947-11-01
Applicant: HARRY D CUMMINS , STANLEY LLOYD J
Inventor： BEESON MARTIN L , SELLERS WILLIAM D
IPC: B25D11/10
CPC classification number: B25D11/102 , Y10T74/18024
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