Number | Name | Date | Kind |
---|---|---|---|
3132147 | Schopf et al. | May 1964 | |
4454139 | Ward et al. | Jun 1984 | |
4481200 | Ward et al. | Nov 1984 |
Number | Date | Country |
---|---|---|
738420 | Jul 1966 | CAX |
337846 | Jun 1959 | DEX |
1024902 | Apr 1966 | GBX |
Entry |
---|
Szantay et al., Chem. Abstracts, vol. 96 (1982), entry 6605e. |