4. Marine propulsion
  5. Screw propeller
  6. Propeller guard

Douglas D. DeMasi

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Bumper ball

Buoys – rafts – and aquatic devices – Water skimming or walking device – Water walking device
Patent

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Christmas tree stand

Supports – Staff type – Stand or base
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Protector against submerged objects

Marine propulsion – Screw propeller – Propeller guard
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Profile ID: LFUS-PAI-P-1268866

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