|
| US3973768 | 22 Nov 1974 | 10 Ago 1976 | | Detachable feed mechanism for printing devices and the like |
| US4134579 | 28 Mar 1977 | 16 Ene 1979 | World Color Press, Inc. | Card inserter for binding machine or the like |
| US4218026 | 23 Jun 1978 | 19 Ago 1980 | Xerox Corporation | Paper web buffer system |
| US4284270 | 3 Oct 1979 | 18 Ago 1981 | Xerox Corporation | Stack for bottom sheet feeder |
| US4288966 | 3 Jul 1979 | 15 Sep 1981 | Bell & Howell Company | Method of vacuum timing control |
| US4305576 | 3 Oct 1979 | 15 Dic 1981 | Xerox Corporation | Sheet separator |
| US4361317 | 10 Abr 1980 | 30 Nov 1982 | | Process and apparatus for the singling of the sheets of a paper stack |
| US4411417 | 2 Nov 1981 | 25 Oct 1983 | Xerox Corporation | Bottom sheet feeding apparatus |
| US4506875 | 23 Dic 1982 | 26 Mar 1985 | S. A. Martin | Suction-box feed device |
| US4580772 | 30 Ene 1984 | 8 Abr 1986 | Bell & Howell Company | Hopper and feeder apparatus and method |
| US5145161 | 3 May 1990 | 8 Sep 1992 | Bell & Howell Phillipsburg Co. | Sheet feeder |
| US5464203 | 25 Oct 1993 | 7 Nov 1995 | Bell & Howell Phillipsburg Company | Sheet feeder |
| US6742779 | 10 Dic 2001 | 1 Jun 2004 | DRS Digitale Repro Systeme GmbH | Automatic document transport method and device using suction to retain unfed documents during feeding |
