Compressors for machines; heat exchangers being parts of motors other than for land vehicles; pumps for machines used in aeronautical and space industries, fluid pumps, namely, water pumps for use in motors and engines, turbo pumps, namely, water pumps for use in motors and engines and pump control valves for fluids, hydrazine thrusters for machinery, bi-propellant thrusters for machinery, propellers with power increased by catalysis for machinery; machine coupling and transmission and propul...