| Number | Date | Country | Kind |
|---|---|---|---|
| 2007-027058 | Oct 2007 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 4792286 | Gassen | Dec 1988 | A |
| D346049 | Iida | Apr 1994 | S |
| D363149 | Franke et al. | Oct 1995 | S |
| D393506 | Ohi et al. | Apr 1998 | S |
| D417044 | Ohi et al. | Nov 1999 | S |
| D431697 | Hayakawa et al. | Oct 2000 | S |
| D481497 | Malmqvist et al. | Oct 2003 | S |
| D481839 | Almqvist et al. | Nov 2003 | S |
| D528256 | Beth et al. | Sep 2006 | S |
| D549893 | Chen | Aug 2007 | S |
| D558939 | Yuasa | Jan 2008 | S |