4. Marine propulsion
  5. Oar or paddle

Ormond S. Douglas

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Adjustable wrench mechanism

Tools – Wrench – screwdriver – or driver therefor – Slidable jaw adjustments
Patent

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Boat paddle having lateral force transmitting rib

Marine propulsion – Oar or paddle
Patent

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Exercise device for invalids

Undertaking
Patent

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Root cutting shovel

Handling: hand and hoist-line implements – Hand forks and shovels
Reexamination Certificate

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Profile ID: LFUS-PAI-P-904077

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