The game board includes a plain and unornamented bottom, which is not shown.
The game board includes a plain and unornamented bottom, which is not shown.
| Number | Name | Date | Kind |
|---|---|---|---|
| 4032151 | Morse | Jun 1977 | A |
| 4190256 | Rudden, Jr. | Feb 1980 | A |
| 4305585 | Flynn | Dec 1981 | A |
| 4411433 | Flynn | Oct 1983 | A |
| 4607847 | Chung | Aug 1986 | A |
| D388129 | Lampel | Dec 1997 | S |
| D446253 | Wilkinson et al. | Aug 2001 | S |
| D448051 | Wilkinson et al. | Sep 2001 | S |
| 6983937 | Levinson | Jan 2006 | B2 |
| 7347422 | Wadowski et al. | Mar 2008 | B1 |