| Number | Date | Country | Kind |
|---|---|---|---|
| 00303252 | Jun 2011 | TW | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 2660774 | Heimann et al. | Dec 1953 | A |
| D252896 | Jovin | Sep 1979 | S |
| D628123 | Kojima et al. | Nov 2010 | S |
| D628517 | Bitzan | Dec 2010 | S |
| D632218 | Yamamoto et al. | Feb 2011 | S |
| D644564 | Kojima et al. | Sep 2011 | S |
| 20050278923 | Wu | Dec 2005 | A1 |