| http://www.w3.org/ns/prov#value | - d membrane cartridge containing sameUS5130159 *Jun 12, 1990Jul 14, 1992Shlenker Robin R TMembranes fashioned from latex and other materials and methods of producing the sameUS5147541Apr 29, 1991Sep 15, 1992Koch Membrane Systems, Inc.Spiral filtration module with strengthened membrane leaves and me
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