Patent US3799443 - HIGH PRESSURE JET CLEANING DEVICE

Citing Patent	Filing date	Issue date	Original Assignee	Title
US5116425	7 Jun 1990	26 May 1992	Softblast, Inc.	Cleaning method
US5199128	3 Apr 1991	6 Apr 1993	The United States of America as represented by the Administrator of the National Aeronautics and Space Administration	Method and apparatus for cleaning rubber deposits from airport runways and roadways
US5957621	20 Feb 1997	28 Sep 1999		System for applying liquid asphalt to a roadbed
US6896742	31 May 2002	24 May 2005	Tennant Company	Brushless scrub head for surface maintenance

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