IC 011. US 013 021 023 031 034. G & S: Industrial apparatus for the cooling, heating and heat treatment of materials and gases, namely, cooling tunnels, refrigerating chambers, batch furnaces and continuous furnaces, cooling tunnels with a base of gas atmospheres or gas flows, gas coolers and gas heaters for the production, preparation and treatment of metal, gas generators, namely, apparatus for generating and delivering high velocity gas flow for cooling materials, evaporators, gas condensers, industrial drying apparatus for dehumidifying gases, and filters being parts of industrial installations for gases and liquid gases, and gas regulators

IC 037. US 100 103 106. G & S: Installation, construction, repair and maintenance of gas and refrigerant supplying systems, and of systems for gas injection and gas feeding in the field of heat and cold treatment and the preparation of raw metallic products

IC 042. US 100 101. G & S: Technology consultancy, technical planning and development for others, and scientific testing in the field of use of gases, cold gases and refrigerants in the metal-producing and metalworking industries, and in the field of heat and cold treatment and the preparation of raw metallic products