dust collecting machine, namely, industrial vacuums; electric dust collecting machines, namely, vacuums; machinery for dust collecting and filtering, namely, vacuum for industrial purposes; robotic vacuum cleaners; vacuum cleaners for industrial and household purpose; suction nozzles for vacuum cleaners; vacuum cleaners and parts therefore, namely, vacuum cleaner hoses, pipes, dust filters and dust filter bags; vacuum cleaning systems comprised of vacuums, electric power units, air filters, dirt canisters, tubing, hoses, nozzles, vents and inlet valves and accessory kits comprised of electric powerheads, floor brushes, electric power brushes, electric power brooms for use therewith; valves for pumps; internal combustion engine parts, namely, pistons; pistons for industrial engines; spark plugs; air filter for motors and engines; air filter for mechanical purposes; vacuum cleaning systems which comprise a central vacuum unit and connected conduits and cleaning nozzles and parts therefor, namely, vacuum cleaner hoses and bags; vacuum cleaning kit comprised of a turbine-powered nozzle, wands, hoses, brushes, and attachment caddy; electric wax-polishing machines for industrial or household purposes; waste handling machines, namely, belt conveyors; waste material conveying machines; scrap and waste material compacting machines; waste material sorting machines; waste material removal machines, namely, machines tools for removing waste material; waste material crushing machines; waste handling equipment, namely, roll-off hoists and trash compactors; waste handling and recycling machines used to shred waste