Number | Name | Date | Kind |
---|---|---|---|
D118160 | Kopanski | Dec 1939 | |
D262370 | Cowan et al. | Dec 1981 | |
D320602 | Wells et al. | Oct 1991 | |
D321886 | Metivier | Nov 1991 | |
D357022 | Prince | Apr 1995 | |
2473141 | Friedberg | Jun 1949 | |
2536053 | Grashow | Jan 1951 | |
4931809 | Putman et al. | Jun 1990 |