4. Machine element or mechanism
  5. Gearing
  6. Interchangeably locked

Craig L. Althen

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Semi-continuous transmission

Machine element or mechanism – Gearing – Interchangeably locked
Patent

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Swim fin with self-adjusting hydrofoil blades

Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached
Patent

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Profile ID: LFUS-PAI-P-418838

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