| Number | Name | Date | Kind |
|---|---|---|---|
| 130094 | White et al. | Jul 1872 | A |
| 1851600 | Stanley | Mar 1932 | A |
| 3061390 | Walsh et al. | Oct 1962 | A |
| 4512607 | Rapp | Apr 1985 | A |
| D349731 | Leveen et al. | Aug 1994 | S |
| 5437493 | Weisleder | Aug 1995 | A |
| D413209 | Jarke | Aug 1999 | S |
| D431019 | Richter | Sep 2000 | S |
| 6126236 | Wu | Oct 2000 | A |
| D442795 | Holt | May 2001 | S |
| Entry |
|---|
| Advertisement for the Levenger Lap Desk®. Levenger Company catalog, Holiday 1999, p. 50. |