3973001 Gas turbine engines, turbojet, aircraft
3973002 Gas turbine engines, turboprop, aircraft
3973003 Gas turbine engines, turbofan, aircraft
3973004 Jet engines
3973005 Pulse-jet engines, aircraft
3973006 Ramjet engines, aircraft
3973007 Rocket engines, aircraft
3973008 Engines, piston, light aircraft and auxiliary
3973009 Engines, helicopter
3973010 Engines and motors, model aircraft
3973012 Aircraft turbine starting systems, hydraulic
3973013 Aircraft turbine starting systems, pneumatic
3973014 Aircraft turbine starting systems, fuel-air
3973015 Aircraft turbine starting systems, solid propellant
3973016 Starters, cartridge, for turbojets
3973017 Aero-engine starting equipment, airborne
3973018 Fuel systems, aircraft engine
3973019 Propellers, wooden, aircraft
3973020 Propellers, fixed pitch, metal, aircraft
3973021 Adjustable-pitch propellers, set on ground, for aircraft
3973022 Variable-pitch (VP) propellers, mechanical control, in-flight, aircraft
3973023 Variable-pitch (VP) propellers, automatic control, in-flight, aircraft
3973024 Variable-pitch (VP) propellers, hydraulic control, in-flight, aircraft
3973025 Variable-pitch (VP) propellers, electric control, in-flight, aircraft
3973026 Feathering propellers, aircraft
3973027 Contra rotating propellers, aircraft
3973029 Turbine blades/vanes, aircraft
3973030 Turbine discs, aircraft
3973031 Turbine nozzle vanes, aircraft
3973033 Carburettors, aircraft
3973034 Engine exhaust systems and manifolds, aircraft
3973035 Air compressors, aircraft
3973036 Compressor stators, gas turbine, aircraft
3973037 Pumps, injection, for starting aircraft
3973038 Pumps, fuel, for aircraft
3973039 Injectors, fuel, aircraft
3973040 Valves, engine, aircraft
3973041 Valve shutters, quick acting, aircraft
3973043 Gears and gear units, aircraft
3973044 Synchronisers (synchroscopes), engine and propeller, aircraft
3973045 Reverse thrust units, aircraft
3973046 Filters, air, oil and fuel, aircraft
3973047 Reheat (afterburner) installations, aircraft
3973049 Cylinder liners, aero-engine
3973050 Insulation blankets, aero-engine
3973051 Pods, aero-engine
3973052 Silencers, aircraft
3973053 Piston engine components, aircraft
3973054 Turbine cowlings, aircraft
3973055 Gas turbine components to aircraft specifications
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