3D printers; 3D printing pens; Commercial and industrial vacuum cleaners; Cordless vacuum cleaners; Electric cordless sweepers; Electric sweepers; Electric vacuum cleaners; Electric vacuum cleaners and their components; Rechargeable sweepers; Road sweepers; Road sweeping machines; Road sweeping machines, self-propelled; Robotic vacuum cleaners; Street sweepers; Street sweeping machines; Vacuum cleaners; Vacuum cleaners for household purposes; Vacuum cleaners for industrial purposes