Number | Name | Date | Kind |
---|---|---|---|
D199096 | Barnett et al. | Sep 1964 | |
D210274 | Wilson | Feb 1968 | |
D242660 | Astle | Dec 1976 | |
D269657 | Taylor | Jul 1983 | |
2939607 | Frater et al. | Dec 1958 | |
3170594 | Nascher | Sep 1963 | |
3398840 | Wilson | Oct 1966 | |
3534866 | Asenbauer | Dec 1968 | |
3675815 | Rehrig | Jul 1972 | |
3952903 | Sanders et al. | Apr 1976 | |
4308954 | Wilson | Jan 1982 |