US Patent 7503725 Subsurface drainage system
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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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US Patent 07503725 Subsurface drainage system US Patent 7503725 Subsurface drainage system
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Patent Number
0750372500
Patent Number
750372500
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Patent Jurisdiction
Patent Number
075037250
Date of Patent
March 17, 2009
0Patent Application Number
118939630
Date Filed
August 20, 2007
0Official Website
Patent Primary Examiner
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Patent Jurisdiction
Patent Number
075037250
Date of Patent
March 17, 2009
0Patent Application Number
118939630
Date Filed
August 20, 2007
0Official Website
Patent Primary Examiner
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US Patent 07503725 Subsurface drainage system
Infobox
Is a
Patent jurisdiction
Patent number
07503725
Date of patent
March 17, 2009
Patent application number
11893963
Date Filed
August 20, 2007
Patent primary examiner
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