|
| US4008889 | 16. Juni 1975 | 22. Febr. 1977 | Redco, Inc. | Vacuum feed mechanism |
| US4358101 | 20. Mai 1981 | 9. Nov. 1982 | Adamovske strojirny, narodni podnik | Sheet feeder device for a printing machine |
| US4638988 | 7. Juni 1985 | 27. Jan. 1987 | Xerox Corporation | Sheet stack support trays |
| US5240244 | 14. Jan. 1992 | 31. Aug. 1993 | Heidelberger Druckmaschinen Aktiengesellschaft | Process and apparatus for prestacking in a sheet feeder of rotary printing presses |