Number | Date | Country | Kind |
---|---|---|---|
78 32387 | Nov 1978 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2789114 | Fischback et al. | Apr 1957 | |
2909460 | Gaertner | Oct 1959 | |
3726880 | Capps | Apr 1973 | |
3732216 | Weinstock | May 1973 | |
4164579 | Bourzat et al. | Aug 1979 |
Entry |
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Knott, Chem. Abstracts, vol. 51, cols. 408-409 (1957). |
Foye et al., Chem. Abstracts, vol. 52, col. 20154 (1958). |
Knott, Chem. Abstracts, vol. 53, col. 946 (1959) (abst. of USP 2,839,404). |