Automated machines for washing solar panels; Rotary brushes for machines; Electric machines and apparatus for cleaning windows, glasses, solar panels, roofs, building facades; Electrical ultrasonic cleaning units for windows, glasses, solar panels, roofs, building facades; Electrically-powered steam cleaning device comprising a hose and nozzle and a vapor-producing chamber that is attached to a water source; Cleaning appliances utilizing steam; Steam cleaners for household purposes; Electric ...