Number | Date | Country | Kind |
---|---|---|---|
3513809 | Apr 1985 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3122594 | Kielback | Feb 1964 | |
3302372 | Hynson et al. | Feb 1967 | |
3364656 | Whiton et al. | Jan 1968 | |
3727381 | Kreimann | Apr 1973 | |
4166730 | Warhol | Sep 1979 | |
4533367 | Hadzismatlovic | Aug 1985 | |
4537752 | Weber | Aug 1985 |
Number | Date | Country |
---|---|---|
1488659 | Oct 1977 | GBX |
Entry |
---|
Kohl, Riesenfeld, "Gas Purification", Third Edition, pp. 476 following, 1979. |