Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 17, 2009
Patent Application Number
11893963
Date Filed
August 20, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A subsurface water drainage system which includes a high porosity cylinder made of a mixture of Portland cement and activated charcoal, such cylinder disposed vertically in the subsoil to receive water discharge therein and to direct such water through its porous midsection into adjacent subsoil at a rate sufficient for dispersing the water to prevent yard surface flooding.
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