Number | Name | Date | Kind |
---|---|---|---|
D293671 | Beaumont | Jan 1988 | |
D298133 | Tokiyama et al. | Oct 1988 | |
D306857 | Beaumont | Mar 1990 | |
D307906 | Beaumont | May 1990 | |
D312456 | Kasparian et al. | Nov 1990 | |
D317307 | Kasparian et al. | Jun 1991 | |
D330204 | Tokiyama | Oct 1992 | |
D330711 | Tokiyama | Nov 1992 |