7
Motors and engines (except for land vehicles); Machine coupling and transmission components (except for land vehicles); Motors, electric, pumps; Grinding tables, mechanical; Waste gas conduits [parts of machines]; Extraction arms (parts of machines); Filters (parts of machines)
11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; Extraction cranes; Filters (parts of household or industrial installations); Filters, filter for gases and liquids, mobile filters, oil mist filters, welding fume filters, central filters, portable filters; Devices for the exhaustion of waste gases, included in this class; Exhaust reels, exhaust hoses
37
Building construction; Repair/maintenance of motors and engines (except for land vehicles), machine coupling and transmission components (except for land vehicles), electric motors, pumps, grinding tables, mechanical, waste gas conduits, extraction arms, filters, machine parts, apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes, extraction cranes, filters, parts of household or industrial installations, filters, filters for gases and fluids, mobile filters, oil mist filters, welding fume filters, central filters, portable filters, devices for blowing out exhaust gases, exhaust reels, exhaust hoses; Installation services for motors and engines (except for land vehicles), machine coupling and transmission components (except for land vehicles), electric motors, pumps, grinding tables, mechanical, waste gas conduits, extraction arms, filters, machine parts, apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes, extraction cranes, filters, parts of household or industrial installations, filters, filters for gases and fluids, mobile filters, oil mist filters, welding fume filters, central filters, portable filters, devices for blowing out exhaust gases, exhaust reels, exhaust hoses