Number | Date | Country | Kind |
---|---|---|---|
3524330 | Jul 1985 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2159140 | Eckell et al. | May 1939 | |
2388959 | Drew | Nov 1945 | |
2833725 | Owen et al. | May 1958 | |
2899383 | Hill | Aug 1959 | |
3062680 | Meddings et al. | Nov 1962 | |
3220957 | Hoff et al. | Nov 1965 | |
3324195 | Hwa et al. | Jun 1967 | |
3772211 | Mounce | Nov 1973 | |
4210605 | Hoshino et al. | Jul 1980 | |
4234462 | Bondar et al. | Nov 1980 |
Number | Date | Country |
---|---|---|
2900384 | Jan 1978 | DEX |
1282347 | Dec 1961 | FRX |
0692300 | Jun 1953 | GBX |
Entry |
---|
Ullmanns Encyklopaedie der technischen Chemie, 4th Ed., vol. 13, pp. 517-518. |