Aquarium pumps; Centrifugal pumps; Circulating pumps; Compressed air pumps; Cooling radiators for motors and engines; Counter-current swimming machines for use in swimming pools to enable swimming in place against an adjustable counter-current, featuring pumps, motor, and adjustable current director outlets; Electric pumps; Electric pumps for swimming pools; Gas diverters consisting of a pump, storage and refilling tank, pre-heater, vaporizer, recuperator, condenser and valves; Motors and pum...