|
| US3944209 | 15 Ene 1974 | 16 Mar 1976 | Bell and Howell Company | High speed document handler |
| US3944213 | 15 Ene 1974 | 16 Mar 1976 | Bell and Howell | High speed document handler |
| US4702466 | 4 Feb 1985 | 27 Oct 1987 | | Sheet material feeder for copiers and other sheet processing apparatus |
| US4715595 | 30 Dic 1985 | 29 Dic 1987 | Kabushiki Kaisha Toshiba | Apparatus for feeding paper sheets from a paper stock to a printer or reader |
