| Number | Date | Country | Kind |
|---|---|---|---|
| 2018 3 0352562 | Jun 2018 | CN | national |
| 2018 3 0686338 | Nov 2018 | CN | national |
| 2018 3 0686341 | Nov 2018 | CN | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| D250129 | Skinner | Oct 1978 | S |
| 4805632 | Pope | Feb 1989 | A |
| D390648 | Woodall, III | Feb 1998 | S |
| 6277646 | Guirguis et al. | Aug 2001 | B1 |
| 6342183 | Lappe et al. | Jan 2002 | B1 |
| D494279 | Cogan et al. | Aug 2004 | S |
| 20030022392 | Hudak | Jan 2003 | A1 |
| 20050106750 | Tung et al. | May 2005 | A1 |