| Number | Date | Country | Kind |
|---|---|---|---|
| 202030042989.9 | Jan 2020 | CN | national |
| 202030043278.3 | Jan 2020 | CN | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| D97588 | Haggstrom | Nov 1935 | S |
| 4359182 | Perkins, Jr. | Nov 1982 | A |
| D309953 | Chien | Aug 1990 | S |
| D367226 | Ransbottom | Feb 1996 | S |
| 20130271814 | Brown | Oct 2013 | A1 |