7
Extracting machines; Vacuum cleaners; Suction turbines [other than for land vehicles]; Electric vacuum cleaners for industrial use; Exhausters being suction ventilators; Filters being parts of machines; Anti-pollution devices for motors and engines; Filters for machines; Portable filtration units [machines]; Filtering machines, separators and centrifuges; Filter housings being parts of machines; Filters [parts of machines or engines]; Industrial floor cleaning machines [vacuum cleaners]; Industrial cleaning machines [vacuum cleaners]; Venturi scrubbers; Filters for cleaning cooling air, for engines; Air cleaners [air filters] for engines; Air filters for mechanical purposes; Skimmers [machines]; Air suction machines; Suction machines for scavenging purposes; Suction machines for industrial purposes; Suction cleaning machines for use in manufacture; Dust separators; Dust filters for vacuum cleaners; Central vacuum cleaning apparatus; Dust removing installations for cleaning purposes; Vacuum cleaners for industrial purposes; Vacuum cleaners for the cleaning of surfaces; Commercial and industrial vacuum cleaners; Oil filters [machine parts]; Oil filters for motors and engines; Oil filters; Air filters for automobile engines
11
Filters for cleaning air; Filters for use with apparatus for ventilating; Filters for waste gas purification; Filters for industrial installations; Filters [parts of household or industrial installations]; Filters for gases [household or industrial installations]; Filters for cleaning gases [parts of household or industrial installations]; Air filters; Air purifying apparatus; Air filtering installations; Air filters for industrial use; Air filters for industrial installations; Air filters for use as dust extractors in industrial processes; Air filters for use as dust arrestants in industrial processes; Extractor fans; Dust filters; Dust cyclone filters; Suction ventilators; Extractor units [ventilation]; Cutting table extraction installations; Hoods incorporating extractor fans; Filters for exhaust extractors [parts of household or industrial installations]; Air purifiers; Apparatus for ventilating; Ventilating installations; Air cleaning apparatus; Electrostatic air filters; Industrial ventilation apparatus; Industrial air purifiers; Cyclones [air purifying apparatus]; Separators for scrubbing air; Flues for ventilating apparatus; Air cleaning filters [parts of air cleaning machines or installations]; Purification installations for waste material; Air purifying apparatus and machines; Electrostatic precipitators for cleaning air; Air purifying units for commercial use; Mobile ventilating apparatus; Motorised fans for ventilation; Turbine ventilators [ventilation apparatus]
37
Repair of air filtering apparatus; Repair of air filters and parts thereof; Installation of dust extraction apparatus; Installation of ventilation and dust extraction systems; Maintenance and repair of ventilating apparatus; HVAC (Heating, ventilation and air conditioning) installation, maintenance and repair; Installation of central vacuum cleaning systems; Installation of environmental protection systems; Installation of environmental engineering systems; Installation of industrial machinery; Pipeline construction and maintenance