| Number | Name | Date | Kind | 
|---|---|---|---|
| RE19238 | Burke | Jul 1934 | |
| 1336898 | Flynn | Apr 1920 | |
| 1753032 | Stein et al. | Apr 1930 | |
| 3789547 | Chemarin | Feb 1974 | |
| 4427390 | Manger | Jan 1984 | |
| 4563159 | Hills et al. | Jan 1986 | |
| 5188533 | Wood | Feb 1993 | |
| 5232392 | Ortiz | Aug 1993 | |
| 5581922 | Heimann | Dec 1996 | 
| Number | Date | Country | 
|---|---|---|
| 357320 | Sep 1931 | GBX | 
| Entry | 
|---|
| Pillow Talk, Butterick Patterns Inc., Oct. 1979. | 
| Alpha Critters, Playthings, p. 79, Apr. 3, 1986. |