A detention filter system for the temporary accumulation and storage of storm water runoff is disclosed for limiting the rate of runoff from a developed tract of land to no more than that which was naturally discharged from the same tract when in its prior undeveloped state. The system includes one or...http://www.google.es/patents/US6368017?utm_source=gb-gplus-sharePatente US6368017 - Storm water detention filter system
