| http://www.w3.org/ns/prov#value | - lliam W. BohnhoffSubsurface fluid drainage and storage system and mat especially utilized for such systemUS6450731 *Jul 24, 2000Sep 17, 2002William W. BohnhoffSystem for applying a liquid, such as a deicing liquid, upon a pavement surfaceUS6585449 *Oct 12, 2001Jul 1, 2003Jui-Wen ChenEnvironment protecting gutter duct structure for a concrete roadwayUS6962464 *Apr 21, 2004Nov 8, 2005Jui Wen ChenMet
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