4. Excavating
  5. Peat excavators

Frederick J. Grace

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Dump scow

Ships – Scows – Dumping and unloading
Patent

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Placement and retrieval barge for off-shore well drilling

Ships – Building – Sectional
Patent

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Portable off shore well installation apparatus

Hydraulic and earth engineering – Fluid control – treatment – or containment – Floatable matter containment
Patent

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Waterway cleaner with endless bucket conveyor

Excavating – Peat excavators
Patent

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Profile ID: LFUS-PAI-P-1102833

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