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E02F3/04- Dredgers Soil-shifting machines mechanically-driven.

E02F3/00- Dredgers Soil-shifting machines.

E02- HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING.

238000006011 modification reaction Methods 0.000 description 2.

238000006073 displacement reaction Methods 0.000 description 2.

XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16.

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Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US67349412A Inventor William Thomas Donnelly Original Assignee William Thomas Donnelly Priority date (The priority date is an assumption and is not a legal conclusion.