4. Aeronautics and astronautics
  5. Aircraft, heavier-than-air
  6. Helicopter or auto-rotating wing sustained, i.e., gyroplanes

Robert W. Metzger

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Light emitting diode indicator

Communications: electrical – Visual indication – Using light emitting diodes
Reexamination Certificate

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Mast torque metering system

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent

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Soft inplane bearingless helicopter rotor

Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Plural articulation
Patent

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Solid state flight deck modules and components thereof

Communications: electrical – Aircraft alarm or indicating systems
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1150487

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