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公开(公告)号：US2810438A
公开(公告)日：1957-10-22
申请号：US51716155
申请日：1955-06-22
Applicant: STONE STANLEY G
Inventor： STONE STANLEY G
CPC classification number: B24B27/0625 , B23D21/00 , B23D45/10 , B23D47/047 , Y10T82/2516 , Y10T82/2518 , Y10T83/2192 , Y10T83/656 , Y10T83/6571 , Y10T83/768
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