Number | Date | Country | Kind |
---|---|---|---|
79 25319 | Oct 1979 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2427925 | Samaniego et al. | Sep 1947 | |
3267150 | Moore et al. | Aug 1966 | |
3397242 | Klein | Aug 1968 | |
3848000 | Charbardes et al. | Nov 1974 | |
3850991 | Charbardes et al. | Nov 1974 | |
3876707 | Menet | Apr 1975 |
Entry |
---|
P. D. Magnus, Tetrahedron, vol. 33, pp. 2019-2045 (1977). |