COMPUTER-BASED AUTOMATED SAND CLASSIFICATION SYSTEM COMPRISING A CENTRAL COMPUTER, PROGRAMMABLE CONTROLLERS AND CLASSIFICATION TANKS FOR PROCESSING AND CLASSIFYING SAND MATERIAL

Electronic light therapy apparatus for the skin; Light emitting devices, namely, lamps and LED devices for treatment of a variety of skin conditions; Phototherapeutic apparatus for medical purposes, namely, a LED (light-emitting diode) light source for medical and aesthetic skin treatments