Irrigation means for the uniform distribution of liquid
Patent 4009832 Issued on March 1, 1977. Estimated Expiration Date: 
March 1, 1994. 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.
March 1, 1994. 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 3080124 3567134 3698195 3779468 3797754 3874598 InventorApplicationNo. 600722 filed on 07/30/1975US Classes:239/542, CONDUIT OR NOZZLE ATTACHED IRRIGATION-TYPE DECELERATOR239/111Absence of fluid pressure opens drainExaminersPrimary: Cline, William R.Attorney, Agent or FirmInternational ClassA01G 25/02 (20060101)Foreign Application Priority Data1974-08-06 DTAbstractA tube is provided with outlet apertures along its length and an internal flap adapted to throttle the flow of liquid through the apertures to an extent that is variable in response to the liquid pressure within the tube. | |
