| Number | Name | Date | Kind |
|---|---|---|---|
| D268348 | Beleckis | Mar 1983 | |
| 3680969 | Gorman | Aug 1972 | |
| 3850488 | Elias et al. | Nov 1974 | |
| 3865445 | Dean et al. | Feb 1975 | |
| 4181381 | St. Amand | Jan 1980 | |
| 4395058 | Terrell | Jul 1983 | |
| 4420086 | Bardes | Dec 1983 | |
| 4645237 | Squire et al. | Feb 1987 | |
| 4681232 | Du Corday | Jul 1987 | |
| 4722626 | Abilsaard | Feb 1988 | |
| 4842435 | Thomas et al. | Jun 1989 | |
| 5187888 | O'Brien et al. | Feb 1993 | |
| 5197762 | Abramov | Mar 1993 |
| Entry |
|---|
| The 1989 Miller's Office Products Catalog, pp. 499 and 502. |
| The 1991 Jacobs Gardner Office Products Catalog, p. 590. |