motors and engines for ship propelling systems, for on-board power generation and for fixed power plants, in particular 2-stroke and 4-stroke diesel engines, 4-stroke diesel-gas and gas-otto engines and parts therefor, in particular fuel-mixing devices, as parts of machines, engine drive shaft couplings as parts of machines; exhaust gas turbochargers and turbines other than for land vehicles, and parts therefor; continuous-flow machines, compressors, turbines, turbomachines, turbogenerator installations and generators for power generation, in particular axial compressors, and radial compressors, none of the foregoing for land vehicles; process gas turbines, axial expanders, radial expanders, transmission expanders, included in class 7; process gas screw compressors, screw expanders, multi-shaft compressors, transmission compressors, industrial steam turbines, and industrial gas turbines, other than for land vehicles; compressor consisting of an integrated electric motor with a compressor; machines and mechanical equipment and apparatus, and installations composed thereof, for generating ultra-high vacuum systems for research purposes