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公开(公告)号：US1587368A
公开(公告)日：1926-06-01
申请号：US65583723
申请日：1923-08-06
Applicant: DEVLIN WILLIAM J
Inventor： DEVLIN WILLIAM J
IPC: B25D9/16
CPC classification number: B25D9/16 , Y10T137/86799
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