4. Internal-combustion engines
  5. Water and hydrocarbon

Harold A. Williamson, Sr.

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Fuel system for internal combustion engines

Internal-combustion engines – Water and hydrocarbon
Patent

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Golfer's positioning and retrieving device

Amusement devices: games – Puzzles – Take-aparts and put-togethers
Patent

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Off-highway trailer hitch

Land vehicles – Wheeled – Articulated vehicle
Patent

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Profile ID: LFUS-PAI-P-1644182

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