Number | Date | Country | Kind |
---|---|---|---|
8611785 | May 1986 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
3615963 | Johansson | Oct 1971 | |
3869334 | Hughes et al. | Mar 1975 | |
3962014 | Hughes et al. | Jun 1976 | |
4121958 | Koonts | Oct 1978 | |
4158073 | Schneider et al. | Jun 1979 | |
4221672 | McWilliams | Sep 1980 | |
4365135 | McWilliams | Dec 1982 | |
4517240 | Tracton et al. | May 1985 | |
4556593 | Hughes | Dec 1985 | |
4564547 | Hughes | Jan 1986 | |
4655861 | Kiss | Apr 1987 |
Entry |
---|
The Condensed Chemical Dictionary, 10th Ed., 1981, p. 840. |