Number | Name | Date | Kind |
---|---|---|---|
D272711 | Griset | Feb 1984 | |
4787767 | Wendt | Nov 1988 | |
4993205 | Dull et al. | Feb 1991 | |
4996811 | Dull et al. | Mar 1991 | |
5003740 | Dull et al. | Apr 1991 | |
5005325 | Dull et al. | Apr 1991 | |
5056577 | DeLong et al. | Oct 1991 | |
5175969 | Knauf et al. | Jan 1993 | |
5347778 | Bray | Sep 1994 |