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1.发明授权
公开(公告)号：US2766370A
公开(公告)日：1956-10-09
申请号：US34841153
申请日：1953-04-13
Applicant: MACMILLAN CLEMENTS
Inventor： GILLETTE ROBERT T
IPC: B23K11/06
CPC classification number: B23K11/061 , B23K2201/18
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