12 Aircraft, In particular aeroplanes, Helicopters, Gyrocopters and Airships; Accessories for aircraft, especially Wings for aircraft, Aerodynamic wings for aircraft, empennages for aircraft, Propellers for air vehicles, in particular screw-propellers, for use in relation to the following goods: Aeroplanes, Helicopters, Gyrocopters and Airships, Rotor blades for aircraft, especially, Rotor blade, for use in relation to the following goods: Helicopters and Gyrocopters