7 Vacuum pumps and vacuum pump stands consisting of vacuum pumps; drives and shaft bearings for vacuum pumps; fittings for vacuum pumps and vacuum pump stands, namely, oil separators, condensate separators, dust separators, radiators for motors and for vacuum pump motors, filters for motors and for vacuum pump motors, steam air condensers, flanges and control apparatus in the nature of pump control valves; valves being parts of machines; vacuum engineering installations, consisting of vacuum pumps, fittings for vacuum pumps, namely, oil separators, condensate separators, dust separators, radiators for motors and for vacuum pump motors, filters for motors and for vacuum pump motors, steam air condensers, metal flanges specially adapted for use with vacuum pumps and control apparatus in the nature of pump control valves, measuring apparatus in the nature of dust measuring apparatus specially adapted for use with vacuum pumps, connection electricity conduits specially adapted for use with vacuum pumps, valves, vacuum vessels in the nature of shaft bearings for vacuum pumps, and process engineering attachments in the nature of drives for vacuum pumps; parts of vacuum engineering installations being vacuum pumps, namely, vacuum-tight, mechanical and electrical ducts, electricity ducts, non-metal thermocouple heating ducts, non-metal fluid ducts, non-metal pipe ducts, rotary bushings, rotary and sliding bushings, sliding bushings all as specially adapted parts that cannot be used independently for vacuum pumps