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公开(公告)号：US3415972A
公开(公告)日：1968-12-10
申请号：US42266564
申请日：1964-12-31
Applicant: AVCO CORP
Inventor： BASSETT ORMON E , GEORGE BRUCK
IPC: B23K11/25
CPC classification number: B23K11/25
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