Pumps, namely, electric pumps; high pressure pumps for cleaning and pollution control; centrifugal pumps; centrifugal process pumps; positive displacement pumps; machines for pressure washing; machines for cleaning surfaces using high pressure water for the purpose of pollution control; machines for cleaning surfaces using pressurized water for the purpose of pollution control; pressure intensifiers, namely, hydraulic intensifiers being parts of machines; parts of machines, namely, back press...