7
Cartridges for filtering machines; Separators for liquids; Fluid separation machines; Valves; Filters being parts of machines or engines
11
Central air-conditioning installations [for industrial purposes]; Central type air conditioning apparatus; Electrostatic air filters; Filters for industrial installations; Filters for air conditioning; Filters for use with apparatus for ventilating; Filters for use with apparatus heating; Filters for industrial and household use; Filters for use with apparatus for air conditioning; Power filters for airconditioning; Air filters; Air-conditioning installations; Filters for use with apparatus for steam generating
24
Filter fibers [textile]; Filtering materials of textile; Non-woven fabrics in the form of rolls for use in manufacture; Textile piece goods for use in the manufacture of industrial filters; Woven fabrics; Filtering materials of textile; Fabrics for industrial use; Industrial fabrics; Textile fibres for filtering; Aeration fabrics; Filter mats of textile materials; Needle punch felts
42
Engineering research; Engineering consultancy services; Technological consultancy; Consultancy relating to filtration technology; Technical engineering; Surveying [engineering]; Professional consultancy relating to technology exploitation; Design of engineered building systems; Engineering services; Technological consultancy