| Number | Name | Date | Kind |
|---|---|---|---|
| D197584 | Nascher et al. | Feb 1964 | |
| D224587 | Jewell | Aug 1972 | |
| D241109 | Levin | Aug 1976 | |
| D349050 | Krupa | Jul 1994 | |
| D352454 | Krupa | Nov 1994 | |
| 2995269 | Pease | Aug 1961 | |
| 3051584 | Tindall | Aug 1962 | |
| 3101864 | Glickman | Aug 1963 | |
| 3351265 | Miller | Nov 1967 | |
| 3537497 | Dickow et al. | Nov 1970 | |
| 3552634 | Ollier et al. | Jan 1971 | |
| 3625713 | Mixon | Dec 1971 | |
| 3676159 | Fallowfield | Jul 1972 | |
| 4091930 | Buchner et al. | May 1978 | |
| 4427129 | Wyslotsky et al. | Jan 1984 | |
| 4427705 | Wyslotsky et al. | Jan 1984 | |
| 4593816 | Langenbeck | Jun 1986 | |
| 4616762 | Alexander | Oct 1986 | |
| 4664922 | Leon et al. | May 1987 | |
| 4892220 | Foos | Jan 1990 | |
| 4986438 | Borst | Jan 1991 | |
| 5007231 | Ingermann | Apr 1991 | |
| 5058761 | Williams | Oct 1991 | |
| 5092479 | Wells | Mar 1992 | |
| 5096084 | Wells | Mar 1992 | |
| 5131551 | Wells | Jul 1992 | |
| 5163269 | Williams | Nov 1992 | |
| 5204130 | McDevitt et al. | Apr 1993 |
| Entry |
|---|
| "Food Packaging", Aug. 1993, Food Engineering. |
| Lewisystems, 1983, p. 18. |