Number | Name | Date | Kind |
---|---|---|---|
D97216 | Vernin | Oct 1935 | |
D166886 | Shepard | May 1952 | |
D169468 | Williams | Apr 1953 | |
D211513 | Brown et al. | Jun 1968 | |
D255657 | Florian et al. | Jul 1980 | |
D310953 | Ilokowicz et al. | Oct 1990 | |
1910396 | Koppelman | May 1933 | |
3221971 | Reny | Dec 1965 | |
3224569 | Leitzel | Dec 1965 |