Air compressor pumps; air compressors; compressor stages; compressors (machines); compressors for fluids; compressors for gases; diesel engine air compressor sets; electric air compressors, other than for surgical use; gas compressors; high pressure compressor assemblies; pneumatic compressors; rotary air compressors; screw air compressors; air blowers; blowers (machines); blowers for moving materials; blowers for scattering materials; blowers for sucking materials; industrial blowers; power blowers for the exhaustion of dust