6 Compressed air ducts and compressed air containers of metal; hose fittings of metal, namely hose couplings, hose clamps, hose nozzles.
7 Compressors, in particular screw-type compressors, oil-free screw-type compressors, screw-type compressors with oil-injection cooling, piston compressors, oil-free piston compressors, oiled piston compressors; compressed air ducts and compressed air containers as parts for machines; integrated compressed air installations, in particular with compressors, motors and radiators; compressed air apparatus, compressed air machines, compressed air tools; compressed air fittings for machines, namely ball valves, air stop valves, quick-action stop valves, condensate drain cocks, return valves, control flanges, automatic condensate drainage devices, oil and water separators, pressure reducers, high-pressure hoses for elastic connections, compressed air hoses, single-hand couplings, basic load alternating circuits; paint spraying apparatus and devices, jacks (machines), hoists (machines), lifting platforms and parts therefor; pumps, included in class 7; car washing pumps, mechanical lubricating apparatus, automatic machine tools; safety valves as parts of machines; compressed air ducts, not of metal; the aforesaid compressors and pumps not, however, for use in household devices.
9 Manometers, elapsed time indicators, pressure switches, safety valves, tyre testing apparatus.
11 Air filters for compressors, not, however, for use in household devices; compressed air filters, air dryers for compressed air installations, not, however, for use in household devices; compressed air drying installations; compressed air ducts, not of metal.
20 Compressed air ducts and compressed air containers, not of metal; hose fittings not of metal, namely hose couplings, hose clamps, hose nozzles.
37 Maintenance of compressed air installations.
42 Planning and engineering of compressed air installations.