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公开(公告)号:US2583151A
公开(公告)日:1952-01-22
申请号:US10775749
申请日:1949-07-30
IPC分类号: B65H75/38
CPC分类号: B65H75/446 , B65H75/38 , B65H2701/33 , Y10T137/6954 , Y10T137/6958 , Y10T137/698
公开(公告)号:US2583151A
公开(公告)日:1952-01-22
申请号:US10775749
申请日:1949-07-30
IPC分类号: B65H75/38
CPC分类号: B65H75/446 , B65H75/38 , B65H2701/33 , Y10T137/6954 , Y10T137/6958 , Y10T137/698