| Number | Name | Date | Kind |
|---|---|---|---|
| D316087 | Meckstroth et al. | Apr 1991 | |
| D317911 | Yokoi | Jul 1991 | |
| D350127 | Gummeson et al. | Aug 1994 | |
| D359483 | Saunders et al. | Jun 1995 | |
| D388415 | Seabert | Dec 1997 | |
| D396033 | Ahearn et al. | Jul 1998 | |
| D400589 | Ham | Nov 1998 | |
| D418500 | Giordano et al. | Jan 2000 |