Number | Date | Country | Kind |
---|---|---|---|
3208142 | Mar 1982 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3952002 | Kramer et al. | Apr 1976 | |
4048318 | Meiser et al. | Sep 1977 | |
4147791 | Meiser et al. | Apr 1979 | |
4156001 | Brandes et al. | May 1979 | |
4251512 | Brandes et al. | Feb 1981 |
Entry |
---|
Merck Index, 9th ed., Abst. 7897 (1976). |