E02F 3/22

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9187880 Electric drive unit for construction machineMay 10, 12Nov 17, 15HITACHI CONSTRUCTION MACHINERY TIERRA CO., LTD.
8997448 Supporting and guiding device for power lines for excavation devicesJun 08, 12Apr 07, 15SOILMEC S.P.A.
6318005 Dredge with improved auger shroudJun 16, 00Nov 20, 01BOWE, RICHARD E., ELLICOTT DREDGES, LLC,
5651200 Debris exclusion devices for an augerhead type hydraulic dredge systemDec 06, 95Jul 29, 97The United States of America as represented by the Secretary of the Army