Agricultural machines; Beverage preparation machines, electromechanical; Coffee grinders, other than hand-operated; Generators of electricity; Motors for boats; Pumps (machines); Pumps (parts of machines, engines or motors); Valves (parts of machines); Air suction machines; Machines and apparatus for cleaning (electric); Aerating pumps for aquaria; Control mechanisms for machines, engines or motors; Machines and apparatus for carpet shampooing (electric); Lubricating pumps; Beer pumps; Bilge pumps; Diaphragm pumps; Catalytic converters; Emission control apparatus (catalytic converters) for exhausts; Centrifugal pumps; Self-priming centrifugal pumps; Engine driven water pumps; Machines for making automotive water pumps; Water pumps for aerating aquaria; Water pumps for vehicles; Exhausts for motors and engines; Couplings for machines; Couplings of metal for hydraulic apparatus; Hydraulic couplings for engines (other than for land vehicles); Hydraulic couplings with integral dampers (other than for land vehicles); Hydraulic couplings with integral dampers (parts of machines)