DEMOLUX

Class [9]
Computer & Software Products & Electrical & Scientific Products

Optical apparatus and optical projectors; transparent slide-rules for calculating; polarised transparencies for providing motion effects, frames for transparencies, calibrated drawing plates, all for use with optical projectors; parts and fittings included in Class 9 for optical projectors; portable tables adapted for optical projectors; stands and containers, all included in Class 9 for use in chemical and physical experiments; optical filters operated by motor or by hand; optical apparatus for the projection of diapositives.