3D printers; 3D printing pens; Air suction machines; Compressed air pumps; Cordless vacuum cleaners; Electric fruit squeezers for household purposes; Electric meat grinders; Electric shearing machines; Floor scrubbing machines; Milk homogenizing machines; Power-operated coffee grinders; Power drills; Robotic vacuum cleaners; Vacuum packaging machines; Whisks, electric, for household purposes; Window openers, electric