1
Gases for industrial, in gaseous and liquid form; protective and dual purpose gases and gas mixtures for industrial purposes; gases for use in laboratories and test gases for research and development; fluorinated hydrocarbons, dry ice, heavy water, carbide and cooling liquid
5
Gases for medical purposes, in gaseous and liquid form, protective and dual purpose gases and gas mixtures for medical purposes
6
Empty steel cylinders, gas cylinders and cylinder taps, storage tanks of metal
7
Supply installations for industrial gases and gas mixtures and gas supplying installations for medical purposes, mainly consisting of pressure tanks, apparatus for the cold reduction of gases, Dewar vessels, freezer containers, steel cylinder bundles and taps, mechanical mixing apparatus, plug-type couplings and pipework of plastic, steel, copper and stainless steel, recorders, bleeding devices with pressure reducers, stop valves and safety valves of metal; nozzle pipes for introducing gases into liquids
9
Pressure regulating apparatus, flow and quantity indicators, and signalling devices for the aforementioned industrial gas and gas mixture supplying installations in class 7, and for gas supplying apparatus for medical purposes; laboratory apparatus; pressure regulating apparatus and devices constructed therefrom; measuring equipment and apparatus, pressure reducers
11
Gas cylinders and cylinder taps, steel cylinders filled with liquid or compressed gases; apparatus for mixing and heating gases; freezing tunnels; air separation installations for liquifying and separating the chemical components of air; machines and containers for storing the chemical components of air; fittings of metal for gases; central gas supplying installations in the form of static tanks of metal with fitted control and evaporation mechanisms
37
Installation, maintenance and repair of gas supplying installations and industrial heating installations
39
Delivery of gas supplying installations by special tanker
42
Planning of gas supplying installations and industrial heating installations