Ejectors, namely, blowing machines for the compression, exhaustion and transport of gases; blowing machines for the compression, exhaustion and transport of objects, in particular food units in the nature of grain; air suction devices being machines; suction devices being air suction machines with parts functioning on the basis of the Bernoulli principle; air suction machines being nozzles for transport devices; air suction machines; air suction machines for industrial use; suction discs, nam...