Number | Name | Date | Kind |
---|---|---|---|
D236559 | Senter | Sep 1975 | |
D291143 | Selbiger et al. | Aug 1987 | |
D293619 | Curley | Jan 1988 | |
D295686 | Selbiger et al. | May 1988 | |
D295687 | Selbiger et al. | May 1988 | |
D296034 | Selbiger et al. | Jun 1988 | |
D297183 | Selbiger | Aug 1988 | |
D298780 | Swett | Dec 1988 | |
D303451 | Weiner | Sep 1989 | |
D306371 | Feller et al. | Jun 1990 | |
D311092 | Hatfield | Oct 1990 | |
D325352 | Feller et al. | May 1992 | |
D325811 | Backus et al. | May 1992 | |
D333205 | Zelenko | Feb 1993 |