Number | Name | Date | Kind |
---|---|---|---|
D248632 | Gillespie et al. | Jul 1978 | |
D348535 | Burnett | Jul 1994 | |
D360660 | Lee | Jul 1995 | |
2589757 | Williams | Mar 1952 | |
3499238 | Publicker | Mar 1970 | |
3531635 | Hancock | Sep 1970 | |
4208848 | Kohl | Jun 1980 | |
4939859 | Bradt | Jul 1990 | |
5349771 | Burnett | Sep 1994 |