Machine tools, namely for processing materials by means of a laser; mechanical installations, namely for processing materials by means of a laser; mechanical hand-held tools, namely for processing materials by means of a laser; parts and accessories for the above machines, installations and tools, included in this class, namely tools for machines, handling devices; mechanical devices as parts of machines for material processing by means of lasers for sorting workpieces (parts); electricity generators including direct current generators, medium and high-frequency generators, namely for industrial lasers, for vacuum and plasma applications.