Number | Name | Date | Kind |
---|---|---|---|
4152130 | Theobald | May 1979 | |
4222756 | Thorogood | Sep 1980 | |
4400188 | Patel et al. | Aug 1983 | |
4464188 | Agrawal et al. | Aug 1984 | |
4595405 | Agrawal et al. | Jun 1986 | |
4705548 | Agrawal et al. | Nov 1987 | |
4707994 | Shenoy et al. | Nov 1987 |
Entry |
---|
Celar et al: "Flexible Process of Pressure Nitrogen and Low Pressure Oxygen Production" Ferox, National Corporation, Decin, Czechoslovakia. |