Gasifiers; Aerators being machines; Air suction machines; Blowing machines for the compression, exhaustion and transport of gases; Compressed air pumps; Compressors for machines; Dust exhausting installations for cleaning purposes; Dust removing installations for cleaning purposes; Electric pumps; Pneumatic pumps; Pneumatically operated tire inflation machine; Pumps as parts of machines, motors and engines; Pumps for machines; Vacuum cleaners; Vacuum pumps