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公开(公告)号:US3491424A
公开(公告)日:1970-01-27
申请号:US3491424D
申请日:1967-12-07
申请人: CHARLES E TIBBALS
发明人: TIBBALS CHARLES E
CPC分类号: B21F99/00 , B21F11/00 , B27M3/0046 , B27M3/04 , Y10S83/909 , Y10T29/49789 , Y10T29/5177 , Y10T83/0515 , Y10T83/4728
公开(公告)号:US3491424A
公开(公告)日:1970-01-27
申请号:US3491424D
申请日:1967-12-07
申请人: CHARLES E TIBBALS
发明人: TIBBALS CHARLES E
CPC分类号: B21F99/00 , B21F11/00 , B27M3/0046 , B27M3/04 , Y10S83/909 , Y10T29/49789 , Y10T29/5177 , Y10T83/0515 , Y10T83/4728