| Number | Date | Country | Kind |
|---|---|---|---|
| 29908 | May 1998 | ILX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D296519 | Newman et al. | Jul 1988 | |
| D314908 | Pedersen | Feb 1991 | |
| D342009 | Lebrecht et al. | Dec 1993 | |
| 3835675 | Lippisch | Sep 1974 | |
| 3858923 | Bunn | Jan 1975 | |
| 4689975 | Dunphy et al. | Sep 1987 | |
| 5655391 | Long | Aug 1997 |