Machines for electro-inductively heating of metallic workpieces being parts of metal working machines; electric machines for welding of metallic components; induction heating machines for metallic surfaces being parts of metal working machines; apparatus for hardening surfaces of workpieces made of metal, namely, metal casting machines; apparatus for the electrochemical machining of metals, namely, electro-chemical machine tools for metalworking; electroinduction apparatus for electromagnetically stirring of melted metals, namely, metal stirring machine; structural replacement parts of the above mentioned equipment, apparatuses, tools and machines included in this class

Repair and installation of machines for electro-inductively heating of metallic workpieces, machines for welding of metallic components, induction heating machines for metallic surfaces, equipment for the surface hardening of metallic workpieces, equipment for the electrochemical working of metal, electric induction equipment for the electromagnetic agitating of liquid metals, and of structural parts of the above mentioned equipment, apparatuses, machines and devices; repair and installation of electrical generators and transformers, electrical measuring and controlling instruments, especially apparatus and instruments for heavy current engineering, namely, for the transformation and controlling of heavy current, electrical frequency converters, inverters and frequency changers for power supplying of apparatus for the industrial heating of materials, apparatus for data processing, and of structural parts of the aforementioned apparatus, tools and machines; repair and installation of apparatus and tools for the industrial electrical heating of metals, especially induction and resistant heating tools and apparatus, electrical induction furnaces for the heating or melting of metals, and of structural parts of the aforementioned apparatus, tools and machines