7 Aero engines, namely, jet engines and propeller turbo jet engines; gas turbines, namely, shaft output drives and structural parts thereof not for land vehicles; turbo blowers, namely, exhaust gas turbo chargers for use with aero engines; mechanically driven compressors; transmission components for gas turbines not for land vehicles, namely, bearings, shafts, belts, gears, gear controls and clutches; transmission components for aero engines, namely, bearings, shafts, belts, gears, gear controls and clutches; oil pumps and hydraulic fluid pumps; fuel pumps for use with aero engines; pump drives in the nature of internal combustion engine parts; radial and axial flow blowers for use with aero engines; fans for use with aero engines; guide grids for turbo engines, namely, guide baffles in the nature of engine parts; gas flow controls for use in gas turbines or aero engines in the nature of throttles and nozzles being machine parts for gas turbine engines not for land vehicles; radial and axial blowers, namely, turbines other than for land vehicles in the nature of machine parts for gas turbine engines for not land vehicles; mufflers for use in gas turbines or aero engines; fuel ducts for conveying fuel within the engine or turbine in the nature of machine parts for gas turbine engines not for land vehicles; fuel injection pumps, nozzles and valves in the nature of parts for aero engines or turbines not for land vehicles; pneumatic starting motors; fixed and detachable machine couplings; hydraulic transmission components in the nature of machine parts specially adapted for gas turbines not for land vehicles and aero engines, namely, pumps, valves, lines and hoses; machine couplings; oil and fuel filters; hydraulic fluid filters for use in gas turbines or aero engines; centrifuges; bearings for transmission shafts being parts of machines; axles not for land vehicles; rotors and transmission components in the nature of machine parts for use with gas turbines not for land vehicles and aero engines; cogged wheels in the nature of machine parts for use with aero engines; housings and assembly devices for drives in the nature of machine parts for gas turbine engines not for land vehicles; control gear, namely, control mechanism for use with aero engine transmission in the nature of machine parts for gas turbine engines not for land vehicles; gaskets for aero engines, brushes, labyrinth and axial face ends, namely, machine parts for gas turbine engines not for land vehicles; rotors, namely, machine parts for gas turbine engines not for land vehicles; machine parts for turbo engines, namely, integrally bladed rotors and housings for turbo engines; blades in the nature of vanes and rotor blades for turbo engines, namely, machine parts for gas turbine engines not for land vehicles; thrust nozzles for aero engines as well as structural parts of the aforesaid goods, namely, machine parts for gas turbine engines not for land vehicles; component parts of turbo engines made of fiber reinforced composites, ceramics and metals, namely, turbine shafts, rotor blades and casings; metal working machines and parts thereof; ignitors for igniting a fuel mixture in an internal combustion engine; ignition devices for use with aero engines; coolers in the nature of fuel and coolant coolers for motors and engines, namely, machine parts for gas turbine engines not for land vehicles; radiators for use with aero engines; jet engine parts, namely, flame arrestors in the nature of engine components used to prevent the spread of flames from the thrust chamber of jet engines; profile and distributing pipes in the nature of parts specially adapted for use in cooling radiators for jet engines