Number | Date | Country | Kind |
---|---|---|---|
3346394 | Dec 1983 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1954638 | Loeffler | Apr 1934 | |
2635329 | DeForest et al. | Apr 1953 | |
4346556 | Rice et al. | Aug 1982 |
Number | Date | Country |
---|---|---|
2549256 | May 1977 | DEX |
2750290 | May 1979 | DEX |
Entry |
---|
Hackh's, Chemical Dictionary, Grant, 3rd Ed., 1944, p. 924. |