Axial and centrifugal compressors for use in aeronef engines; pumps, namely, fluid pumps, turbo pumps; turbo molecular pumps; hydraulic and pneumatic valves for fluids, namely, check valves, self-sealing valves, regulating valves, air * - * intake valves, hot air-valves, flow regulating valves, overpressure safety valves, distribution valves; thrusters for machinery, namely, electrothermal hydrazine thrusters, bi-propellant thrusters, catalysis increased power thrusters, ion thrusters, electr...