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公开(公告)号：US3145997A
公开(公告)日：1964-08-25
申请号：US17628162
申请日：1962-02-28
Applicant: DAVID MOSES
Inventor： DAVID MOSES
IPC: B23B31/16
CPC classification number: B23B31/16287 , Y10T279/1062 , Y10T279/1961
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