Number | Name | Date | Kind |
---|---|---|---|
3342729 | Strand | Sep 1967 | |
4069103 | Muller | Jan 1978 | |
4228199 | Chiu et al. | Oct 1980 | |
4280815 | Oberhardt et al. | Jul 1981 | |
4477480 | Seidel et al. | Oct 1984 | |
4562086 | Smolka et al. | Dec 1985 |
Entry |
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Dorr-Oliver Ultrafiltration Systems, Bulletin No. 10-9, (Dorr-Oliver Inc. 1984). |