Water dropping type irrigation pipe
Patent 4285472 Issued on August 25, 1981. Estimated Expiration Date: 
April 10, 1999. 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.
April 10, 1999. 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 3467142 Hoses for irrigation by dripping and the like and the process to manufacture the same Three layer irrigation tube and apparatus and method for producing same Patent #: 4195784 InventorsApplicationNo. 06/028650 filed on 04/10/1979US Classes:239/542CONDUIT OR NOZZLE ATTACHED IRRIGATION-TYPE DECELERATORExaminersPrimary: Reeves, Robert B.Assistant: Church, Gene A. Attorney, Agent or FirmInternational ClassA01G 25/02 (20060101)Foreign Application Priority Data1978-04-12 JPAbstractA water dropping type irrigation pipe includes a conduit formed by peeling laminated films in a longitudinal direction; laminated side parts projected to both sides of the conduit in a form of fins and a water distribution passage formed by peeling at least one of the laminated side parts in a distribution passage pattern having a throat part which is branched from the conduit. | |
