4. Aeronautics and astronautics
  5. Aircraft propulsion
  6. Screw

Harold E. Lemont

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Helicopter rotor thrust ring

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

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Insulation system

Pipes and tubular conduits – Distinct layers – With mechanical means to hold layers in contact
Patent

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Insulation system

Receptacles – Flaccid wall material permanently united with a skeletal...
Patent

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Propulsive thrust ring system

Rotary kinetic fluid motors or pumps – Plural runners supported for relative motion or on separate... – Serially spaced in working fluid flow path
Patent

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Propulsive thrust ring system

Aeronautics and astronautics – Aircraft propulsion – Screw
Patent

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Profile ID: LFUS-PAI-P-291936

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