| Number | Name | Date | Kind |
|---|---|---|---|
| D259750 | Buhk | Jul 1981 | |
| D313703 | Moschini et al. | Jan 1991 | |
| D318763 | George et al. | Aug 1991 | |
| D322898 | Zapf | Jan 1992 | |
| D354178 | Ochsner | Jan 1995 | |
| D375009 | Webb | Oct 1996 | |
| D379567 | Grivet | Jun 1997 | |
| D401075 | Smith | Nov 1998 | |
| D409022 | Vanderwood et al. | May 1999 | |
| D416716 | Ginat | Nov 1999 |