IC 009. US 021 023 026 036 038. G & S: Electronic films containing material which changes optical characteristics and color in the presence of an electric field, the electronic films being used in the manufacture of displays, screens, display device, and printing device
IC 017. US 001 005 012 013 035 050. G & S: Plastic films containing material which changes optical characteristics and color in the presence of an electric field, the plastic films being used in the manufacture of displays, screens, display device, and printing devices; Plastic sheets containing material which changes optical characteristics and color in the presence of an electric field, the plastic sheets being used in the manufacture of displays, screens, display device, and printing devices
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