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GB664745A
|
|
Aircraft sustaining rotor blade with suction system for boundary layer control
|
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GB666921A
|
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Improvements in and relating to helicopters
|
|
GB659443A
|
|
Improvements in and relating to multirotor helicopters
|
|
GB665629A
|
|
Improvements in two-speed gear power-transmission systems
|
|
GB643703A
|
|
Improvements in and relating to helicopters
|
|
GB644524A
|
|
Improvements in and relating to the power transmission systems of multi-rotor helicopters
|
|
GB646866A
|
|
Improvements in and relating to helicopters
|
|
GB646867A
|
|
Improvements in and relating to multi-rotor helicopters
|
|
GB646865A
|
|
Improvements in and relating to multi-rotor helicopters
|
|
GB646864A
|
|
Improvements in rotary-winged aircraft
|
|
GB644900A
|
|
Improvements in rotor blades for rotary-winged aircraft
|
|
US2494217A
|
|
Helicopter
|
|
GB628699A
|
|
Improvements in helicopters
|
|
GB626788A
|
|
Improvements in automatic clutches for power transmission systems
|
|
GB625778A
|
|
Improvements relating to rotor blades for helicopters and the like rotary-winged aircraft
|
|
GB618914A
|
|
Improvements in and relating to undercarriages for aircraft, especially helicopters
|
|
GB623582A
|
|
Improvements in and relating to aircraft with rotating wings
|
|
GB618140A
|
|
Improvements in and relating to the power transmission to helicopter rotors
|
|
GB617290A
|
|
Improvements in and relating to helicopters
|
|
GB616227A
|
|
Improvements in aircraft with sustaining rotors disposed forward and aft of the centre of gravity
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