7 Filters for motors, engines, and industrial and agricultural machines; filter systems comprising filter housing and replaceable filter elements for motors, engines, and industrial and agricultural machines; filter elements for filter systems comprising filter housing and replaceable filter elements for motors, engines, and industrial and agricultural machines; liquid filters for motors, engines, and industrial and agricultural machines; filter elements for the aforesaid liquid filters for motors, engines, and industrial and agricultural machines; oil filters; oil filter systems comprising oil filter housing and replaceable oil filter elements; oil filter elements; gear oil filters being parts of motors and engines; fuel filters; fuel filter systems comprising fuel filter housing and replaceable fuel filter elements; fuel filter elements; in-line fuel filters; in-tank fuel filters; urea filters being parts of motors and engines; urea filter systems comprising urea filter housing and replaceable urea filter elements being parts of motors and engines; filter elements for urea filters being parts of motors and engines; filters for hydraulic fluids for motors and engines and industrial and agricultural machinery; filters for coolants for motors and engines; spin-on oil filters; filters for electric discharge machines; filter elements for electric discharge machines; liquid filters for machine tools, namely, for oil, hydraulic fluids, water, and process fluids; backflushing filters for mechanical purposes for liquids, namely, oil, hydraulic fluids, water, and process fluids; oil-water heat exchangers being parts of motors, engines, and machines; air filters being parts of motors, engines, and industrial and agricultural machines; air filter systems comprising air filter housing and replaceable air filter elements, being parts of motors, engines, and industrial and agricultural machines; air filter elements for the aforesaid air filters and air filter systems; intake-air filters as parts of air-intake systems for motors, engines, and industrial and agricultural machines, comprised of air filters, air intake ducts, and valves; oil mist separators; air-oil separator elements being parts of machines; aeration and ventilation filters for liquid tanks for motors and engines; vacuum filters for the installation in air and gas pipes as parts of machines; filters for vacuum pumps; filters for compressed air systems and air compressors; cyclones; centrifuges; dust separators; water separators being parts of vehicle engine fuel filters; oil separators; active acoustic components for engines and air intake ducts of engines, namely, resonators, sound absorbers, and non-electronic engine sound enhancing devices in the nature of sound transfer and transmission devices, intake noise amplifiers, symposers, sound pipes, resonator tubes; passive acoustic components for engines and air intake ducts of engines, namely, resonators, sound absorbers, and non-electronic engine sound enhancing devices in the nature of sound transfer and transmission devices, intake noise amplifiers, symposers, sound pipes, resonator tubes; resonators being parts of machines, motors, and engines; sound absorbers being parts of machines, motors, and engines for the attenuation of sound and absorption of vibration; vehicle parts, namely, air ducts; vehicle parts, namely, clean air ducts; vehicle parts, namely, raw-air ducts; flaps as parts of motors, engines, and machines, namely, orifice flaps, hot air flaps, cold air flaps, all being parts of intake manifolds for internal combustion engine; valves being parts of motors, engines, and machines; orifice flaps being parts of automotive intake manifolds; throttle valves being parts of automotive intake manifolds; hot air flaps being parts of automotive intake manifolds; cold air flaps being parts of automotive intake manifolds; internal combustion engine parts, namely, pressure control valves for crankcase ventilation systems; exhaust gas recirculation valves; exhaust gas recirculation ducts; internal combustion engine parts, namely, crankcase ventilation systems; internal combustion engine parts, namely, closed crankcase ventilation systems; internal combustion engine parts, namely, air intake systems comprised of air filters, air intake ducts, and valves; internal combustion engine parts, namely, active air intake systems comprised of air filters, air intake ducts, and valves; internal combustion engine parts, namely, passive air intake systems comprised of air filters, air intake ducts, and valves; vehicle parts, namely, intake manifolds; vehicle parts, namely, active intake manifolds; vehicle parts, namely, passive intake manifolds; fitted covers for motors and engines not for land vehicles; fitted design covers for motors and engines not for land vehicles; covers for cylinder heads for engines; engine camshaft covers; vehicle engine parts, namely, valve chamber covers; vehicle oil pans; turbochargers for engines; charge air compressors being parts of internal combustion engines; active cooling distributors being parts of the radiator for vehicle motors and engines * for controlling the cooling agent and the temperature, depending on the respective motor conditions, such as number of revolutions and engine load * ; active cooling switches being parts of the radiator for vehicle motors and engines * for controlling the cooling agent and the temperature, depending on the respective motor conditions, such as number of revolutions and engine load * ; active cooling valves being parts of the radiator for vehicle motors and engines * for controlling the cooling agent and the temperature, depending on the respective motor conditions, such as number of revolutions and engine load * ; non-electronic sound transfer and transmission units being parts of vehicle motors and engines for the purpose of amplifying sound generated by an engine; vehicle engine parts, namely, coolant expansion tanks; non-electronic sound-symposer being parts of vehicle motors and engines for the purpose of amplifying sound generated by an engine; sound-pipes being parts of vehicle motors and engines for the purpose of amplifying sound generated by an engine; non-electronic intake noise amplifiers being parts of vehicle motors and engines for amplifying or modulating the intake noise in vehicle passengers compartments and outside the vehicles; resonator tubes for use with vehicle air intake systems for the attenuation of sound