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Hydraulically operated air borne rotor craft

Aeronautics and astronautics – Aircraft power plants – Transmission of power
Patent

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Hydraulically operated aircraft with a retractable propeller

Aeronautics and astronautics – Aircraft power plants – Mounting
Patent

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Hydrogen powered aircraft

Aeronautics and astronautics – Aircraft power plants – High altitude
Reexamination Certificate

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Hydrogen powered aircraft

Aeronautics and astronautics – Aircraft power plants – High altitude
Reexamination Certificate

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Hypersonic flight vehicle

Aeronautics and astronautics – Aircraft power plants
Patent

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