Drainage system
Patent 4589798 Issued on May 20, 1986. Estimated Expiration Date: 
June 4, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 4, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2701027 3501007 3626823 Combined leaching and sump catch-basin Patent #: 4031009 InventorApplicationNo. 06/616673 filed on 06/04/1984US Classes:405/36, DRAINAGE OR IRRIGATION210/164, Flat grating at surface level405/52FLUID CONTROL, TREATMENT, OR CONTAINMENTExaminersPrimary: Taylor, Dennis L.Attorney, Agent or FirmInternational ClassesB01D 24/04 (20060101)B01D 24/02 (20060101) AbstractA drainage system for disbursing water supplied by a drain pipe including an enclosure positionable in water permeable material, its top edge generally flush with terrain, and said enclosure having a generally perforated top, an opening in the bottom and an opening in a side wall. Water received by the enclosure through an opening in the side wall and is generally spread and thereby gradually dispersed around the enclosure and residual water in the enclosure is gradually leaked off through the opening in the bottom. | |
