4. Fluid reaction surfaces (i.e., impellers)
  5. Unsymmetrical impeller or dissimilar working members

Hans-Otto Fischer

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Airscrew or propeller for propelling an aircraft

Fluid reaction surfaces (i.e. – impellers) – Unsymmetrical impeller or dissimilar working members
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Obstacle in front of a propeller

Rotary kinetic fluid motors or pumps – With sound or vibratory wave absorbing or preventing means...
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Remotely piloted vehicle

Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane sustained
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Profile ID: LFUS-PAI-P-424381

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