| Number | Date | Country | Kind |
|---|---|---|---|
| 2014 3 0271697 | Aug 2014 | CN | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 403656 | Gerstle | May 1889 | A |
| 967799 | MacBeth | Aug 1910 | A |
| 1173662 | Hayward | Feb 1916 | A |
| 1490568 | Koenig | Apr 1924 | A |
| 2033011 | Schilling | Mar 1936 | A |
| 2361417 | Reichart | Oct 1944 | A |
| 5701807 | Park | Dec 1997 | A |
| 5887751 | Kroscher | Mar 1999 | A |
| 6079590 | Munari | Jun 2000 | A |
| 6173860 | Lamers | Jan 2001 | B1 |
| 6685048 | Ranzoni | Feb 2004 | B1 |
| 8104638 | Garziera | Jan 2012 | B2 |
| 8950621 | Hinzman | Feb 2015 | B2 |