Patents by Inventor Graham A. Hornabrook

Graham A. Hornabrook has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Irrigation monitoring system
    Patent number: 4431338
    Abstract: An irrigation system in which a main channel is connected to a series of irrigation bays by separate distribution channels and the flow of water to each bay is controlled centrally in response to the moisture content in each bay. The bays are irrigated in sequence by a central control system.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: February 14, 1984
    Inventor: Graham A. Hornabrook