| http://www.w3.org/ns/prov#value | - ng device with optical switching unit of laminated insulating and conductive layersUS5048949 *6 Ago 199017 Sep 1991Casio Computer Co., Ltd.Liquid crystal projectorUS5056895 *21 May 199015 Oct 1991Greyhawk Systems, Inc.Active matrix liquid crystal liquid crystal light valve including a dielectric mirror upon a leveling layer and having fringing fieldsUS5073772 *3 Feb 198917 Dic 1991Sharp Kabushiki
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