| Number | Date | Country | Kind |
|---|---|---|---|
| 4011251 | May 2009 | GB | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5926897 | Volpenhein | Jul 1999 | A |
| D421845 | Beals | Mar 2000 | S |
| D443985 | Beals et al. | Jun 2001 | S |
| D450457 | Hohlbein | Nov 2001 | S |
| 6546586 | Cho | Apr 2003 | B2 |
| D578768 | Geiberger | Oct 2008 | S |
| Number | Date | Country |
|---|---|---|
| 2002345560 | Dec 2002 | JP |
| 2002345561 | Dec 2002 | JP |
| 2007159727 | Jun 2007 | JP |