Machine couplings and transmission components not for land vehicles; electric generators; current generators; electrical energy generators; hydraulic power generators; aerogenerators for producing wind power; hydraulic power plants; wind turbines; engines not for land vehicles; electric motors not for land vehicles; hydraulic engines; hydraulic motors; pumps, namely, electric pumps; centrifugal pumps; water pumps being machines; turbines, electric power turbines, hydraulic turbines, and wind ...