![]() ![]() Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Charles George Ollinger, IV Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Ceased, expires Application number US09/776,020 Other versions US20020104238A1 Google Patents US6578294B2 - Dredge cutterheadÄownload PDF Info Publication number US6578294B2 US6578294B2 US09/776,020 US77602001A US6578294B2 US 6578294 B2 US6578294 B2 US 6578294B2 US 77602001 A US77602001 A US 77602001A US 6578294 B2 US6578294 B2 US 6578294B2 Authority US United States Prior art keywords ring hub curvature cutterhead degree Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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