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公开(公告)号：US2598048A
公开(公告)日：1952-05-27
申请号：US1669048
申请日：1948-03-24
Applicant: WOOLERY MACHINE COMPANY
Inventor： GILMORE LLOYD J
CPC classification number: B27B19/006 , E01B31/23 , Y10S83/928 , Y10T83/6985 , Y10T83/7693
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