| Number | Date | Country | Kind |
|---|---|---|---|
| 2007 3 0286229 | Dec 2007 | CN | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 4153346 | Gomer | May 1979 | A |
| 5557345 | Katzenmeyer et al. | Sep 1996 | A |
| D396052 | Stolt | Jul 1998 | S |
| D548251 | Broersma | Aug 2007 | S |
| D560706 | Tabacchi | Jan 2008 | S |
| 7341342 | Jain | Mar 2008 | B2 |