The unshaded circular shapes shown in
The unshaded circular shapes shown in
| Number | Name | Date | Kind |
|---|---|---|---|
| 3826362 | Staskus | Jul 1974 | A |
| D283105 | Dornbusch et al. | Mar 1986 | S |
| 5263612 | Nederveld | Nov 1993 | A |
| D416487 | Shapiro | Nov 1999 | S |
| D635852 | Jenkins | Apr 2011 | S |
| 8302845 | Bell et al. | Nov 2012 | B2 |