| Number | Name | Date | Kind |
|---|---|---|---|
| D297137 | Richter et al. | Aug 1988 | |
| D311191 | Ando | Oct 1990 | |
| D311399 | Ando | Oct 1990 | |
| D319235 | Sato | Aug 1991 | |
| D319443 | Fuqua et al. | Aug 1991 | |
| D339583 | Taniguchi | Sep 1993 | |
| D346384 | Ford et al. | Apr 1994 | |
| D346385 | Wetzel et al. | Apr 1994 | |
| 3941951 | Engstrom et al. | Mar 1976 | |
| 4790007 | Richter et al. | Dec 1988 | |
| 5121427 | Gumb et al. | Jun 1992 |