| Number | Date | Country | Kind |
|---|---|---|---|
| 002261750-0001 | Jun 2013 | EM | regional |
| Number | Name | Date | Kind |
|---|---|---|---|
| 2162096 | Marmorek | Jun 1939 | A |
| 2580188 | Nilsen | Dec 1951 | A |
| 2584063 | Suellentrop | Jan 1952 | A |
| 2654585 | Heesen | Oct 1953 | A |
| 3397577 | Siebert | Aug 1968 | A |
| 4580450 | Ota et al. | Apr 1986 | A |
| 4865208 | Lax et al. | Sep 1989 | A |
| 5101998 | Hwang | Apr 1992 | A |
| 5730479 | Jansson | Mar 1998 | A |
| 5799811 | Bruckner et al. | Sep 1998 | A |
| 6364162 | Johnson et al. | Apr 2002 | B1 |
| 7213734 | Atcheson | May 2007 | B2 |
| 7308915 | Johns et al. | Dec 2007 | B2 |