Number | Name | Date | Kind |
---|---|---|---|
2306071 | McNally et al. | Dec 1942 | |
2635048 | Land | Apr 1953 | |
3362819 | Land | Jan 1968 | |
3362821 | Land | Jan 1968 | |
4029849 | Abel | May 1977 | |
4229516 | Abel | Oct 1980 |
Number | Date | Country |
---|---|---|
1321672 | Jun 1973 | GBX |
Entry |
---|
Research Disclosure, Item 12331, vol. 123, Jul. 1974. |