发明名称 Dredging apparatus
摘要 In embodiments of the invention, a dredging head assembly uses vacuum only, or a combination of vacuum and flexible PVC tines, rather than the harsh digging and/or scraping features of conventional dredging equipment. Embodiments of the invention also provide a dredging head assembly that may be used in very shallow water. An embodiment of the invention includes a hose and wand to enable vacuuming around obstacles.
申请公布号 US8127474(B2) 申请公布日期 2012.03.06
申请号 US20090490448 申请日期 2009.06.24
申请人 PHILLIPS RICHARD JOHN 发明人 PHILLIPS RICHARD JOHN
分类号 E02F9/10 主分类号 E02F9/10
代理机构 代理人
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