Condensing installations, namely, mechanical condensators; mechanical condensators, namely, steam condensers; air condensers; [ steam engines; power-operated blowers, namely, blowing machines for the compression, exhaustion and transport of gases; blowing machines, namely, power-operated blowers; hangers being parts of machines; machines, namely, ] air compressors; cooling radiators for motors and engines; [ pumps as parts of machines and engines; pumps for machines; electric pumps for heatin...