Number | Date | Country | Kind |
---|---|---|---|
2928599 | Jul 1979 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1859543 | Urbain | May 1932 | |
1888713 | Britton et al. | Nov 1932 | |
1914750 | Marsh | Jun 1933 | |
3995013 | Demarq | Nov 1976 |
Number | Date | Country |
---|---|---|
312685 | Feb 1930 | GBX |
441239 | May 1975 | SUX |
Entry |
---|
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd Edition, vol. 15, p. 307, (1968). |