![]() Smith Original Assignee Smith Leward N Priority date (The priority date is an assumption and is not a legal conclusion. ![]() Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/681,275 Inventor Leward N. Google Patents Dredging system and methods of dredgingÄownload PDF Info Publication number US4052801A US4052801A US05/681,275 US68127576A US4052801A US 4052801 A US4052801 A US 4052801A US 68127576 A US68127576 A US 68127576A US 4052801 A US4052801 A US 4052801A Authority US United States Prior art keywords disc generally housing boom cutterhead Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4052801A - Dredging system and methods of dredging US4052801A - Dredging system and methods of dredging
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