Vacuum cleaners for household purposes; Vacuum cleaners for industrial purposes; Swimming pool vacuum cleaners; Machines for shelling nuts; Electric machines for opening coconuts; Vacuum cleaners powered by rechargeable batteries; Cordless vacuum cleaners; Hand-held vacuum cleaners; Wet-dry vacuums; Electric vacuum cleaners; Robotic vacuum cleaners; Food extrusion machines; Turbochargers for motors; Robotic lawn mowers; Printheads for 3D printers