|
| US4475896 | 2 Dic 1981 | 9 Oct 1984 | Xerox Corporation | Curling/decurling method and mechanism |
| US4505695 | 18 Abr 1983 | 19 Mar 1985 | Xerox Corporation | Sheet decurling mechanism |
| US4627718 | 1 Jun 1984 | 9 Dic 1986 | Xerox Corporation | Sheet curl control apparatus for a copier |
| US5150600 | 22 Ene 1991 | 29 Sep 1992 | Frank L. Wells Company | Resilient member nesting apparatus |
| US5592844 | 29 Jun 1995 | 14 Ene 1997 | Elpatronic AG | Process and apparatus for rounding sheet-metal blanks |
| US6631631 | 5 Oct 2001 | 14 Oct 2003 | Elpatronic AG | Two-roll rounding machine and method for rounding sheet-metal blanks |
| US6725699 | 23 Ene 2002 | 27 Abr 2004 | Elpatronic AG | Method for circulary bending a sheet and multicylinder device for carrying out the method |
| US6751995 | 9 Ago 2002 | 22 Jun 2004 | | Roll bending die |
| US7677505 | 22 Jun 2007 | 16 Mar 2010 | | Arcuate saddle with partial ribs |
| US8038105 | 11 Feb 2010 | 18 Oct 2011 | Buckaroos, Inc. | Arcuate saddle with partial ribs and methods of manufacture |