Number | Name | Date | Kind |
---|---|---|---|
2055162 | Weber | Sep 1936 | |
2088497 | Tijmstra | Jul 1937 | |
2271671 | Wible | Feb 1942 | |
3595626 | Sowards | Jul 1971 | |
3959419 | Kitterman | May 1976 | |
4002705 | McKeown | Jan 1977 | |
4333894 | Hoppe et al. | Jun 1982 | |
4871382 | Thorogood et al. | Oct 1989 | |
5019144 | Victor et al. | May 1991 | |
5019145 | Rohde et al. | May 1991 |
Number | Date | Country |
---|---|---|
564516 | May 1957 | ITX |
Entry |
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Liquid Air Fractionation, J. G. Aston et al Jun. 1947 Industrial and Engineering Chemistry, p. 718. |
Vacuum Tower Revamp. W. C. McClain, Jr. Sep. 1985 Chemical Processing, p. 82. |