Number | Name | Date | Kind |
---|---|---|---|
704698 | Edison | Jul 1902 | |
2817287 | Onarheim et al. | Dec 1957 | |
2944286 | Kullgren et al. | Jul 1960 | |
3232722 | Sanders | Feb 1966 | |
3877365 | Berggren | Apr 1975 | |
4074803 | Kollberg | Feb 1978 | |
4152119 | Schulz | May 1979 |
Entry |
---|
Kirk--Othmer, Encyclopedia of Chemical Technology, 1964, John Wiley and Sons, Inc., vol. 4, pp. 668-671. |