7
Filters being parts of machines; Filters for separators; Filter housings being parts of machines; Filters for internal combustion engines; Anti-pollution devices for motors and engines; Filter housings being parts of engines; Filters [parts of machines or engines]; Filters for cleaning cooling air or exhaust gases (for engines); Filters for hot gases for use with internal combustion engines; Filters (parts of machines or engines) in the form of metal filters, filters which are automatically cleaned, filters for petroleum products; Oil filters and fuel filters and filters for vehicles
11
Filters for industrial installations; Filters for industrial installations with automatic cleaning; Filters for water purifiers; Filters for air extractor hoods; Filters for fume extractors; Filters for air conditioning; Filters for waste gas purification; Filters for cleaning air; Filters for use with apparatus for water supply; Filters for drinking water; Filters for gas extractors; Water treatment filters; Filters for cleaning air; Filter apparatus for water supply installations; Filters for sanitary water distribution apparatus; Filters for use with apparatus for ventilating; Filter elements for the air vents of water supply tanks; Filter elements for the overflows of water supply tanks; Filters for gases [household or industrial installations]; Filters [parts of household or industrial installations]; Filters for use with apparatus for steam generating; Filters for use with apparatus for heating or refrigerating