Drip or trickle emitter
Patent 4281798 Issued on August 4, 1981. Estimated Expiration Date: 
September 7, 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.
September 7, 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 3729142 3834628 Flow restrictor and trickle emitter Drip irrigation emitter Patent #: 4121771 InventorApplicationNo. 06/073313 filed on 09/07/1979US Classes:239/542CONDUIT OR NOZZLE ATTACHED IRRIGATION-TYPE DECELERATORExaminersPrimary: Cherry, Johnny D.Attorney, Agent or FirmInternational ClassA01G 25/02 (20060101)Foreign Application Priority Data1978-09-07 ILAbstractA drip or trickle emitter for use in field and crop irrigation is of outwardly pill-box like appearance, consisting of a first outer cylinderical cup shaped body and a second inner equally cup shaped body fitting into the first one, the open sides of these bodies facing opposite directions, one of the bodies having in its wall a tortuous, continuous groove.Field of SearchCONDUIT OR NOZZLE ATTACHED IRRIGATION-TYPE DECELERATOR | |
