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公开(公告)号：US2627646A
公开(公告)日：1953-02-10
申请号：US3471448
申请日：1948-06-23
Applicant: PERRY FAY COMPANY
Inventor： PERRY RICHARD D , ROSS BAUMGARDNER
IPC: B23G1/04
CPC classification number: B23G1/04 , Y10T29/5158
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