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公开(公告)号：US2655192A
公开(公告)日：1953-10-13
申请号：US23202951
申请日：1951-06-16
Applicant: LA LONE RALPH
Inventor： LA LONE RALPH
CPC classification number: B23D15/00 , B21D5/0272 , Y10S72/701 , Y10T83/5778 , Y10T83/8822
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