Welding apparatus, gas-operated; electric welding apparatus; electric arc welding apparatus; electric arc cutting apparatus; washing apparatus; blowing machines; harvesting machines; aerating pumps for aquaria; saws [machines]; agitators; electric hammers; cutting machines; chain saws; hand-held tools, other than hand-operated; electric hand drills; dynamos; generators of electricity; motors, electric, other than for land vehicles; pumps [machines]; compressed air pumps; blowing machines for the compression, exhaustion and transport of gases; compressed air machines; welding machines, electric.