Number | Name | Date | Kind |
---|---|---|---|
D93920 | Gufler | Nov 1934 | |
D195218 | Estern et al. | May 1963 | |
D272843 | Appel et al. | Feb 1984 | |
D315036 | Leopold | Feb 1991 | |
D317957 | Horvath et al. | Jul 1991 | |
D331268 | Thurston et al. | Nov 1992 | |
D332290 | Altiery | Jan 1993 | |
5261848 | Kaplan et al. | Nov 1993 |