Projection screens; screens [photography]; slide projectors; projection apparatus; optical lanterns; optical lenses; video screens

Optical Products, namely, optical reflectors, optical shutters, and optical readers; Optical Lenses; Projection Equipment, namely, projection screens, transparency projection apparatus, and slide or photograph projection apparatus; Downloadable educational audio and visual media, namely, audio files, video recordings, and multimedia files for scientific research in laboratories; Teaching Projection Lamps, namely, transparency projection apparatus; Slide Show Equipment, namely, slide projector...