|
| US3949981 | 16 Sep 1974 | 13 Abr 1976 | Brandt-Pra, Inc. | Mechanism for stacking sheets |
| US4106766 | 8 Dic 1976 | 15 Ago 1978 | Bell & Howell Company | Sheet handling and stacking methods and apparatus |
| US4200016 | 13 Jun 1978 | 29 Abr 1980 | Rotographic Machinery | Apparatus for forming a horizontal stack of vertically oriented sheets |
| US4591142 | 27 Dic 1983 | 27 May 1986 | Hotchkiss-Brandt Sogeme H.B.S. | Stacker for flat objects |
| US4613033 | 5 Sep 1984 | 23 Sep 1986 | Focke & Co., (GmbH & Co) | Apparatus for the introduction of objects, especially packets, into a packet tower |
| US4723773 | 17 Oct 1986 | 9 Feb 1988 | Bell & Howell Company | Sheet feeding methods and apparatus |
| US4805894 | 12 Jun 1986 | 21 Feb 1989 | TransTechnology Corporation | Stacking methods and apparatus |
| US4903956 | 31 Oct 1988 | 27 Feb 1990 | | Sheet stacking apparatus having positive control system for trailing sheet ends |
| US6227538 | 19 Abr 1999 | 8 May 2001 | GBR Systems Corporation | Paper tamping mechanism |
| US6257571 | 28 Oct 1999 | 10 Jul 2001 | GBR Systems Corporation | Edge tamping mechanism |
| US6290221 | 14 Jul 1999 | 18 Sep 2001 | Toshiba Tec Kabushiki Kaisha
Kabushiki Kaisha Toshiba | Sheet stacking/conveying unit and image forming apparatus using sheet stacking/conveying unit |
| US6634639 | 14 May 2002 | 21 Oct 2003 | NEC Corporation | Paper sheet stacking apparatus |
| US6666448 | 12 Dic 2001 | 23 Dic 2003 | Hitachi, Ltd. | Apparatus handling paper sheets and the like |
| US7513498 | 2 Dic 2003 | 7 Abr 2009 | Hewlett-Packard Development Company, L.P. | Processing sheet media |
