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公开(公告)号：US2782024A
公开(公告)日：1957-02-19
申请号：US46163854
申请日：1954-10-11
Applicant: AIR REDUCTION
Inventor： PETER DEMMER ADOLPH , EVANS CHARLES T
IPC: B23K7/00
CPC classification number: B23K7/002
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