DG DUST GUARD

Digital signs; Laser projection virtual keyboards; Optical lenses; Cameras; Webcams; Movie projectors; Multimedia projectors; Slide or photograph projection apparatus; Video projectors; Projection screens; Projector component, namely, optical engines; Audio- and video-receivers; Projection television sets; Recorded computer software for use in database management; Video conferencing apparatus, namely, wireless communication device featuring voice, data and image transmission, video cameras, video monitors; Video screens