Number | Name | Date | Kind |
---|---|---|---|
D303557 | Kiiski | Sep 1989 | |
D325951 | Johnson | May 1992 | |
D342107 | Chang | Dec 1993 | |
D355227 | Summers et al. | Feb 1995 | |
D369843 | Wang et al. | May 1996 | |
D372508 | Clem | Aug 1996 | |
D374260 | Snyderman et al. | Oct 1996 | |
5645510 | Wilkinson | Jul 1997 | |
5711745 | Yang | Jan 1998 |