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| US4400297 | 14 Oct 1980 | 23 Ago 1983 | Morca, Inc. | Modified hydrated magnesium aluminosilicates and method of preparation | | US4515633 | 27 Jun 1983 | 7 May 1985 | Morca, Inc. | Polymeric materials combined with modified hydrated magnesium aluminosilicates |
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