Number | Name | Date | Kind |
---|---|---|---|
4199623 | Nuzzi et al. | Apr 1980 | |
4324629 | Oka et al. | Apr 1982 | |
4805553 | Krulik | Feb 1989 | |
5091070 | Bauer et al. | Feb 1992 |
Entry |
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"Selemion Ion-Exchange Membranes," product literature of Asahi Glass Co., Ltd. (1992), pp. 3-18. |