Patents by Inventor Robert L. Ragsdale

Robert L. Ragsdale 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).

  • Fumigation system
    Patent number: 4171092
    Abstract: The invention relates to a system for fumigation of enclosed spaces particularly poultry houses or environments where insects have to be controlled. The system provides a timed interval automatic sprayer system using compressed air, a source of insecticide and distribution equipment including conduits, nozzles and valves for distributing the insecticide in vapor form at a relatively uniform pressure.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: October 16, 1979
    Assignee: Clyde Ragsdale
    Inventor: Robert L. Ragsdale