Number | Date | Country | Kind |
---|---|---|---|
2821294 | May 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1907497 | Caplan | May 1933 | |
2176951 | Bannister | Oct 1939 | |
2231860 | Swallen | Feb 1941 | |
2631097 | Redfern | Mar 1953 | |
2631098 | Redfern | Mar 1953 | |
3287479 | Naudain | Nov 1966 | |
3474065 | Gburek et al. | Oct 1969 |
Entry |
---|
Chem. Abstracts, vol. 36 1942, 4222.sup.7-9 4223.sup.1 Ushakov et al. |